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Civil liberties Driving Electric Transport Mobile Communications Motorcycling Motoring Music Nostalgia Science Society Technology Transport Travel Vehicle Safety Vehicles

Who is Driving YOUR Car?

Those of you who are of a “certain age” may well remember the song Car 6-7, the lyrics of which tell the sad story of a taxi driver who has split up from his girlfriend, and is turning down a pick-up from control, as it’s the ex-girlfriend.

That was back in November 1978, and the old-fashioned two-way VHF radios used in taxi cabs have been largely been updated, and to a certain extent have been superseded by smart phones and booking software.

Typical 2-way VHF transceiver as used by mini-cab companies in the 1970s and 1980s

We have all become used to very sophisticated communications systems; Bluetooth earpieces and microphones, Wi-Fi internet connections, cordless phones and smart speakers such as Alexa.

Modern cars are no exceptions. My car has a Bluetooth system that will support two mobile phones; My 2013 motorcycle has the same. 

Very sophisticated.

Well, it was in 2017 when it rolled off the production line in Kvasiny in the Czech Republic.

Kvasiny in the Czech Republic – the home of the Skoda Yeti…

But things are changing fast, and we are now moving into the world of Intelligent Transport Systems (ITS).

ITS is a futuristic totally integrated transport system that uses an infrastructure of sensors, communications links, artificial intelligence and algorithms to monitor and manage traffic flow, safety and incidents. Data collected may also be used to help design safer and more efficient transport systems, which may be optimised for different conditions.

We are already using a very basic kind of ITS; We have CCTV cameras that remotely monitor our motorways and road networks. Automatic Number Plate Recognition (ANPR) cameras that are able to identify and trackthe driving behaviour of a specific vehicle, and monitor entry and exit times of vehicles using private car parking facilities.

ANPR and CCTV cameras…

We have under-road systems that monitor the volume and speed of traffic[1] – (You may have wondered about those geometric grids in each lane of the motorway placed at regular intervals?), speed-monitoring enforcement cameras mounted on overhead gantries, and Variable Message Signs (VMSs) 

All of these systems will look like they came out of the stone age when compared with what’s coming very soon.

Intelligent Transport Systems combine data that comes from a variety of sources. 

One of the sources of dynamic data are vehicles that are actually using the road network.

Cars have recently become a lot smarter. My ancient vehicle (4 years old) is just about capable of talking to my smart phone. 

New vehicles will be able to communicate on many different levels.

Imagine, if you will, a car that is able to independently communicate with other, similarly equipped vehicles.This is the most basic system, referred to as V2V

Cars are already fitted with Autonomous Driver Assistance Systems which include obstacle detection, autonomous emergency braking, lane departure warning systems, and adaptive cruise control. See my previous article entitled Autonomous Vehicle Safety Devices – Do you turn YOURS off? for details.

Maybe the car ahead detects an obstacle, and applies the emergency brakes. This information in instantaneously broadcast to all following vehicles, and this in turn allows them to begin braking – before a human driver is even aware that an emergency exists.

Vehicles may also be designed to interact with the infrastructure (traffic signals, traffic density and speed monitors, road condition sensors etc). This is known as V2I. 

A V2V/V2I equipped vehicle starts to lose traction on a wet road, and begins aquaplaning. A message is sent from the vehicle to other vehicles, and also to the fixed highway infrastructure. The infrastructure may then automatically activate warning signs and reduce speed limits accordingly.

This is not science fiction.  This is Science Fact.

Infrastructure sensors that continually monitor the depth of water on the road surface and the road surface temperature already exist, and are integrated into the ITS. 

The UK’s Vehicle and Operator Services Agency (VOSA) have been operating a sophisticated network of subsurface sensors that are capable of accurately detecting overloaded Heavy Goods Vehicles. This system is known as WIMS, short for Weight In Motion Sensors. This uses induction loops and special sensors to detect the weight being carried by each axle of the truck in question. When combined with ANPR cameras, the system will identify the vehicle, and also be able to calculate whether it is overloaded, and whether it is complying with the speed limit.

Other car communications systems enable the vehicle to exchange data with the wider internet of things, and may also inter-exchange with other transport modes. This is known as Vehicle to Cloud (V2C). This would enable a vehicle to be able to communicate with trains, aircraft ships and exchange other relevant data.

Lastly, cars will also be able to communicate with pedestrians. (V2P). This would allow vehicles to update pedestrians on their status, and speed of approach. Such information could be received by the pedestrian by using a smart phone. 

Cars, trucks, buses, motorcycles, farm vehicles and even bicycles will all become part of a communicating interactive network, and ultimately connected to the global internet of things.

Combine the automated on-board driver assistance systems with the benefits of a smart, thinking and proactive transport network, and road safety may show some dramatic improvements.

Currently in the UK, about 40% all vehicle accidents were as a direct result on a driver “failing to see” the other vehicle. 

In our brave new world, your car probably won’t let you pull out of that junction as its already identified an approaching car, assessed the risk, and calculated that there would be a collision! That’s assuming that both cars are V2V/V2I equipped.

Old duffers like me driving a 2017 model will still have to rely on the Mark I eyeball, and the basic training received nearly 45 years ago.

The old saying that the best safety device in a car was a well-trained driver may no longer be true.

Live Long and Prosper…


[1] MIDAS – Motorway Incident Detection and Auto-Signalling. An Induction loops system that senses a vehicles presence using magnetism.

Categories
College Deafness English Culture Mobile Communications Science Technology Trains Transport Wearable Technology

Am I reading the Signs Correctly?

A sign of the times…

A few years ago, I had to attend a meeting in the London offices of the CAA, and rather than pay the congestion charge, and then fight it out with the city traffic, I decided to catch the train to Waterloo, and then use a Boris Bike to cycle the last mile to the office.

Boris Bikes – I love using these! Cheap, and only a seven minute cycle from Waterloo to Work!

It was a lovely sunny morning as I stood on the platform waiting for the 09:09 Liphook to Waterloo service.

The 0909 from Liphook to Waterloo. A mobile office – A mobile reading room…

The carriage that I boarded was almost empty, and I chose a table seat, and sat by the window, and took a sip of my coffee.

I smiled. I had bought my coffee from the young, attractive blonde woman who operated the coffee van outside the station.  

I had flirted outrageously with her, and she had charmingly flirted back, despite the fact that I am probably double her age (at least!). No wonder she always has a queue for coffees. She is always cheerful and happy regardless of the weather. And the coffee is great too, so a win-win for everyone.

The best coffee for a pre-commute journey, and served with a smile and a flirt… what more could a chap want for?

The Liphook train is never in much of a hurry to get to Waterloo. It meanders through Haslemere, Guildford and Woking, stopping at the many small towns and villages that constitute commuter-land.

By the time it clatters into Godalming, my carriage is starting to fill up. In compliance with the average Brits’ reluctance to engage with any strangers, many people passed through the carriage, despite the fact that there were three empty seats at my table.

Eventually, three young women shyly sat with me. I budged over to make room and reassure them, and fished my battered paperback book out of my bag. 

They all pulled files and folders out of their bags, and set them on the table, and busied themselves with their textbooks. Obviously, University of Surrey kids on their way to a lecture.

I returned to my book, and attempted to read, but something was not quite right.

It took me five minutes or so to realise that they were not making much noise, and I surreptitiously glanced over at them.

It suddenly struck me that these young women were all deaf, and were enthusiastically signing to each other – their hands moving constantly; some gestures as soft as butterflies, some more direct chopping movements.

British Sign Language being used to translate the Welsh Assembly’s COVID Briefing.

One of them caught me looking at her, and she fired a smile at me that was as bright as the sunshine pouring into the carriage, and I found myself disadvantaged in not knowing how to respond, and all I could do was offer a grin back. Embarrassing or what?

They departed the train at Guildford, still signing happily. I watched them wandering off up the platform as the train finally decided to recommence it’s groan towards Woking.

This did get me thinking. I had felt quite disconnected from three fellow human beings. If they had required my help, they would have had to write their request down, as I couldn’t sign, and I never heard one of them utter a single word.

I promised myself that I would learn British Sign Language one day.

Well, like most people, one day has still never come, and I still don’t know how to sign. 

Good news is now on the horizon, that will enable those who are unable to hear, to communicate with those that can’t “speak” in sign language.

It’s the white knight of wearable technology to the rescue!

There is now hope for easy communications between those that sign, and those that can’t. The communications barrier has finally been breached!

Recent research published in Nature Electronics shows that wearable technology is able to offer a highly accurate real-time translation of sign language into speech, and delivers translations that are about 99% accurate and with a translation time of less than a second on average.

To put it simply, Yarn-based stretchable sensor arrays (YSSA) are used to track the movements of the hand, and will monitor the position of fingers, thumbs, and the movement of hands through the air. 

These clever sensors are lightweight, cheap and highly sensitive. They offer stretchability and are durable and hard wearing, so they are ideal for incorporation into a wearable tech system.

Using artificial intelligence, and a specifically targeted algorithm it is possible to calculate the underlying meaning of the hand gestures and movements.

To put it simply, the sensor array is woven into a lightweight simplified glove, which flexes with the movement of the hand, fingers and thumbs. The movements of the glove generate electronic signals that are processed by the receiver and then translated into the speech equivalent.

To add even more accuracy, it was possible during the tests to stick a YSSA sensor to the side of the mouth, or near the eye of the wearer to monitor facial expressions, all of which are essential subconscious enhancements to language.

The Yarn-based Stretchable Sensor Array, in the form of a lightweight glove.

All of the data is then transmitted to a very small wirelessly-connected receiver which is worn on the body in an inconspicuous location. Once the data is received, it may be transmitted to a software application on a smart phone, and the “app” will convert the data to human speech and synthesise the words as audible and recognisable speech. 

According to the report, the system is 99% accurate, and has a gesture-to-word processing time of less than one second.

At the moment, the system is in its infancy, and is a bit agricultural to look at, but in time, it is possible that the components will be small enough and discrete enough to be worn confidently by a person with a serious hearing impairment.

It will also ensure that people like me won’t miss out on having our lives enriched by being able to converse easily with someone who signs.

How fantastic is that?

The photo that I have chosen as the cover image, is of a sculture on a wall outside a school for the deaf in Prague.

It translates as “Life is beautiful, be happy and love each other”

The sculture was created by Czech Zuzana Čížkové. Photo by ŠJù under CCA-SA 3.0

Go Well!

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Uncategorized

Tyre Hotels and Tyres at Home. Your Choice…

Those of you who are my regular readers, will have seen my article on the benefits of fitting winter tyres to your cars for six months, normally running from October until March (or longer if long-range weather forecasts predict temperatures of below +7°C or +45°F).

Fitting winter tyres obviously requires the removal and storage of the summer tyres.

If you have decided to invest in a set of winter tyres fitted to steel wheel rims, then you will need to store the tyres until you need to refit them at a later date.

Those of you that decide to just invest in the tyres, and have them fitted to your existing rims will require the services of a tyre dealer. The fitters will remove the summer tyres, and fit the winter tyres to your existing wheel rims.

You will then need to take the summer tyres back to the location where you intend to store them. This is OK if your vehicle has a large load deck, but may be more of a challenge if you operate a small hatchback, or city car.

Alternatively, many tyre dealers have recognised a sales opportunity, and will store the tyres for you. Merit Tyres, for example operate a “Tyre Hotel” and ATS Tyres offer the same service. ATS charges £8.00 per tyre per season, so that will be an additional cost of £64.00 annually.  There will also be a fitting cost to cover the switchover of each tyre, and when I had a verbal quote for doing this three years ago, it was about £20.00 per wheel, so another £160.00 per year.

Typical Tyre Changing Equipment, Photo Courtesy Flippin504

It doesn’t take a rocket scientist to work out that this is an extra £224.00 per year!

So, buying the winter tyres ready-fitted on the rims, as I did, (October 2018, 4 X Continental Winter tyres, fitted to steel rims, 205/55 R16 91H at £515.00) they would pay for themselves in under two and a half years.

I ordered them from eBay, and they arrived fully inflated, and fitted with the tyre pressure indication system modules, and were already balanced. All I had to do was fit them!

Available on the world’s favourite auction site…

It makes a lot of sense, if you have the space to store the tyres or wheel/tyre combinations yourself.

I am fortunate that I have a garage, but even a sturdy and secure garden shed would be all that’s needed.

There are a few things that you need to know before storing your tyres.

Firstly, you need to remember that tyres are made from both synthetic and natural products, so they will be affected by a number of factors.

Temperature, humidity and light are probably the primary factors to consider when finding a place to store your tyres. 

Ideally, the temperature should stable, and less than +25°C (77°F) and preferably below +15°C (59°F) and the light levels should be low or, better still, dark. Humidity should be as low as possible, so damp areas should be avoided.

Unless you are very wealthy, and have an air conditioned or climate-controlled garage, it will not be possible to completely eradicate temperature variations, but do the best you can.

Before storing your tyres away, you should wash them, and brush away any residues of grit, dirt, and brake dust. Dry them with a cloth, and allow them to air dry completely.

I also use the opportunity to carefully inspect the inner and outer sidewalls, and remove any flints or stones from the tyre treads.

There is no need to apply any proprietary dressings to the sidewalls.

Place each tyre or tyre/wheel combination inside a large black plastic refuse bag. Try and remove as much air as possible from the bag, possibly using a vacuum cleaner, and then seal it tightly with tape.

Clear a suitable area in which to place the tyres. Unmounted tyres should preferably be stored upright, and if that isn’t possible, then stacked on their sides. This isn’t ideal, and care should be taken to ensure that the tyres aren’t being deformed, and that the stack isn’t tipping. You need to avoid tyres dropping onto the floor from heights above 1.5 metres. This will prevent damage the tyre bead. Should the bead be damaged, it may prevent the tyre from being seated correctly.

Tyres mounted on rims should ideally be stacked. If floor space is limited, then tyres on rims may be hung from suitably mounted hooks. Unmounted tyres should never be hung from hooks as this will deform the tyre.

Other factors to consider, is that the tyre will be extremely susceptible to damage from ozone. Ozone is generated by electrical motors, and therefore, tyres must not be located near to electrical equipment in your garage or workshop.

So, items such as generators, compressors, bench saws, grinders, drills and routers should not be used near to the tyres on a regular basis.

You should also aim to keep tyres away from solvents, oils, chemicals and fuels as these may denature the rubber composites used in the tyre’s construction.

Doing these simple things when you store your summer/winter tyres will ensure that your tyres remain in good condition, and help to extend their useful working life.

They will also keep you safer.

Remember, that whilst tanking along at 70 MPH, your car is sitting on four patches of rubber that each measure about the size of your hand.

This is known as the “Contact Patch” and varies in size according to the air pressure inside the tyre, and the load that the tyre is carrying. It may be as little as 36 square inches. Not a lot is it?

When you refit your wheels, you should ensure that the wheel studs are tightened to the correct torque, and that you have inflated them to the correct pressure.

So, correct storage, and correct fitting and inflation will help you to stay safe on the highways, whether it’s the middle of summer, or the depths of winter.

Go Well…

Further information from Continental Tyres

You could also try one of these

Wheel Storage Unit

Heading Image courtesy of FreeImages.co.uk

Categories
Climate change Driving English Culture Environment Motoring Society Transport Travel Vehicle Safety Vehicles

Staying Safe – Despite the Weather

I was mentally kicking myself. Just over a month previously, I had traded in my 4×4 SUV, replacing it with a 2WD Skoda Yeti. I had been pleased with the Kia Sportage, but despite my care in driving it, the fuel economy was not as good as I had been led to believe.

My Kia Sportage 2 4WD. Nice to drive, but too thirsty!

It was the 1st March 2018. At 1530, I left my office at Aviation House, heading for home. My route from Gatwick Airport was cross country. I could easily have driven home more quickly up the M23, M25 and A3, but at a cost of an extra eleven miles motoring.

Hardly fuel efficient!

Skoda Yeti… Workhorse, paractical and almost 60 miles to the gallon on DERV,

My normal route was a delight. Out through the village that shares my name, and then through Ifield and Rusper, to join the main A264 just east of Horsham.

I would then cut through the back lanes of Broadbridge Heath, and then head south west through Loxwood, and on through Haselemere and from there via Liphook to home.

Storm Emma decided to put paid to that little plan. The snow began to fall; small pellets that danced and pirouetted slowly through the sky until they smacked wetly on the car windscreen.

By the time I got to Loxwood, I was seriously considering the wisdom of my decision to trade the 4×4 in. It was now hurtling down heavily, a swirling white vortex pouring out of a grey and ominous looking cloud.

Traffic speed was decreasing to almost pedestrian speeds, and I was now having to concentrate hard to anticipate the erratic behaviour of other vehicles.

Haslemere was, by this time, totally gridlocked. The snow was now very deep, and it was almost dark.

Haslemere, in Surrey and traffic at a standstill.

I looked at my watch. 1830! I would normally have been home by 1700.

I was beginning to get worried. There were several routes that I could take to get out of Haslemere, but all required me to drive up steep hills, and looking at the developing chaos I had little confidence that I would make it up any of them.

Cars were slaloming down the slightest of inclines, and I witnessed many crashes, and the roadsides were now becoming strewn with crumpled cars,

At 2030, I had managed to travel about 2 miles, so I ended up making the decision to abort my journey, and park up and weather the storm. I knew the decision was correct when I witnessed a Police 4×4 pick-up truck struggling to climb the slight incline. Despite the four wheel drive, its wheels were still slipping.

Surrey Police Ford Ranger 4 x 4 pick up…

I now didn’t feel quite so bad. If a well-equipped emergency services 4×4 couldn’t make it out of the town, then even in my previous 4×4, I wouldn’t have either.

I found a grass verge sufficiently away from the kerb, and drove up and parked, backing up in such a way that a mature tree would offer some protection should someone lose control of their vehicle and depart the carriage way.

I gingerly opened the door into the maelstrom, and crunched my way to the tailgate. Opening it, I dragged out my thick government issue wet weather high viz jacket, and opened my car winter crate.

I decided when I first began commuting long distances across empty countryside to prepare for all eventualities, and so I had previously invested in a large plastic crate, into which I packed my emergency kit. Next to the crate were half a dozen blankets of the type that removal companies use to protect furniture.

A fold-up shovel, a set of jump leads, a pair of work gloves, half a dozen bottles of water, a pair of wellingtons, a torch, and some dried food in the form of energy bars, packs of nuts and chocolate.

Yes…. Lots of chocolate. You can never have too much chocolate in an emergency box.

I selected a handful of bars of chocolate, and a couple of bottles of water. Slamming the tailgate shut, I got back into the drivers seat, and started the engine.

I dialled up maximum heat from the climate control, and switched on the electrically heated seats. Reclining the seat back as far as it would go, I snugged up under the blankets and dozed off.

Haslemere snowed in. Photo Courtesy Ian Underwood.

The temperature outside continued to drop. and I eventually had to start the car every fifteen minutes and run the engine for a while to stay warm.

I slept very fitfully and was wide awake by 0530.

The storm had passed through, and I decided that I would attempt to get home.

I knew that as long as I could get the car moving and maintain a constant speed, I could probably get up the hill, from where I could make my way to the A3, which, I hoped would be open. I knew that once other cars started moving, my chances of a successful escape from Haslemere would revert back to zero.

Even genteel Haslemere loses it’s appeal to a cold and hungry driver.

Starting the car, I eased it into gear, and slowly, ever so slowly accelerated up to about twenty miles per hour. Every so often the wheels would spin, but the plucky little car continued up the hill which I crested without seeing another vehicle on the road.

I did see quite a lot in ditches though, inclding a single decker bus and a police car.

The A3 was closed northbound, but – joy of joys, it was still clear southbound.

Half an hour later I was at home. The first thing I did after having a hot shower and a cup of tea was to start researching for winter tyres.

I have to admit – I had never really considered using winter tyres. I had always thought that they were a hyped up fashion in the UK, as we don’t expereience the extremes of weather that are enjoyed by our continental neighbours.

If you are fortunate enough to live in the United Kingdom, then according to figures I dug out of the Meteorology Office, we only get to “enjoy” snow for 23.7 days per year, and it only lays around for an average of 15.6 days each year.

Winter Tyres – on a Steel Rim. Great for country lanes, potholes and freezing conditions. Image courtesy of FreeImages.co.uk

On this basis, I was started wondering if it would be worth it.

It seems that during the winter in the south east of England (The counties of Kent, Sussex, Surrey Buckinghamshire, Berkshire, Hampshire, Dorset and Wiltshire, and London) the winter temperatures sit at around 3℃ in London, down to -0.5℃ on the coast.

There is little difference between snow tyres and winter tyres. Winter tyres are optimised to perform at their best during all types of winter weather, including rain, sleet, snow, and slippery surfaces. Snow tyres may well have studs moulded into the tread to enable better grip in very hostile weather conditions.

Winter tyres are designed to offer their best performance when outside air temperatures are less than 7℃ (45℉) and have a tread design that includes deeper grooves or “sipes”

This makes them ideally suited for a typical British winter. Take November 2019, for example. According to Met Office figures, the average temperature this time last year was 5.3ºC – prime conditions for winter tyres.

Firstly, how can you recognise a winter tyre?

Winter tyres carry a mark on the sidewall which consists of three mountains with a snowflake. This “Three Peak Mountain Snowflake” symbol indicates that the tyre has undergone and passed a specific winter traction performance test.

My somewhat salty, muddy, winter tyre, clearly showing the winter tyre mark Photo Mark Charlwood

In order to perform well under the low temperature, wet and slippery conditions, winter tyres are constructed from carefully blended rubber compounds that are hydrophilic in nature.

These compounds contain more natural rubber, which stays softer at lower temperatures, and helps the tyre to become more “grippy” in wet conditions.

Winter tyres are also narrower than standard tyres; the width of the tread is narrower for the wheel diameter. This reduces the resistance of the tyre as it is driving through snow.

The tyre will also have a deep groove pattern, with many additional smaller grooves known as Sipes that are designed to cut through snow, and improve traction.

Deep grooved tread pattern, clearly showing the sipes and the extra blocks for exerting grip. Photo Mark Charlwood

Tests conducted by the British Tyre Manufacturers Association found that a car braking at 60mph on a wet road at 5 degrees Celsius stopped five metres shorter, equivalent to more than one car length, when fitted with winter weather tyres.

I could see the immediate and obvious benefits of fitting winter tyres.

I started by ringing round the local tyre dealers, to get costs. Most of the dealers were able to supply, at reasonable prices.

What I hadn’t bargained for was the extra costs involved. My normal “Summer” tyres were not worn out. I would need the tyres removed from my rims, and the winter tyres put on. Then, when I needed to change back to the summer tyres, I would need the dealer to remove the winter tyres, and refit them.

As they wouldn’t be fitting a new tyre, they would charge £20.00 +VAT per wheel to switch them. £80, twice a year! And I would have to store the tyres as well.

It was beginning to look costly.

Then I had a brainwave.

What if I bought some steel wheels and had the winter tyres fitted to them?

It would mean my nice Alloys wouldn’t be subjected to the rough conditions (salt, mud, and the risks of hitting potholes, or the verges) and I could change the wheels myself without incurring costs.

Solution found.

Now I hit a potential problem that had me scratching my head.

My car was originally fitted with 17 inch rims. All of the winter tyres quoted for my model of car were 16 inch rims, and a lot narrower.

Whilst Skoda Yetis may be bought new with 16 inch wheels, I was worried that the smaller size would mean the the tyre pressure monitoring system, stability control and anti skid systems would be compromised if I put smaller narrower tyres on.

A quick conversation with the service manager at the local Skoda dealer and I was happy. He explained that whilst the wheel rim was of a smaller diameter, the extra height of the tyre sidewall would ensure the onboard systems wouldn’t have any problems.

I eventually sourced a company on eBay that supplied me with four Continental winter tyres, ready-fitted onto steel rims. They arrived direct from Germany, and it took me about an hour to remove and refit all four wheels.

My experience is good. There is a definite improvement in the handling of the car during braking and cornering in slippery and wet conditions.

Some folk complain of the tyres being noisier than summer tyres, but I haven’t noticed this. The only thing that I do notice, is that the speedometer over reads by about 10% now compared with the GPS (An indicated 77 mph equates to 70 mph GPS true speed) and as a result, my sat nav system calculates my drive to work as 44 miles, but the car trip recorder shows 47 miles.

Not too much of an issue, but I have to remember to deduct 10% of the fuel computer’s range-to-empty figures!

It must be remembered that winter tyres should really only be fitted in about October, and removed in March. Winter tyre rubber compounds do not work well at average spring and summer temperatures, and in many cases, braking will be considerably poorer than those achieved using the original tyres.

Yes, they cost me about £500 to buy, but I am only wearing both sets of tyres out at half the rate, so it was a good investment.

I regard it as an extra piece of insurance.

Stay Safe!

Categories
Aircew airlines aviation Climate change Econonomy Environment Flight pilots Science Technology Transport Travel Uncategorized Vehicles Work

Greening Aviation – Not as Simple as it Sounds

According to recent research conducted by the University of Reading in the UK, many tonnes of fuel could be saved by airlines, (and therefore many tonnes of greenhouse gases) if they planned to always fly in favourable winds whilst crossing the Atlantic.

The study found that commercial flights between New York and London last winter could have used up to 16% less fuel if they had made better use of the fast-moving winds at altitude.

New satellites will soon allow transatlantic flights to be tracked more accurately while remaining a safe distance apart. This opportunity could allow aircraft to be more flexible in their flight paths, in order to more accurately follow favourable tailwinds and avoid headwinds, offering the aviation sector a cheaper and more immediate way of cutting emissions than through advances in technology.

The report stated: “Current transatlantic flight paths mean aircraft are burning more fuel and emitting more carbon dioxide than they need to”.

“Although winds are taken into account to some degree when planning routes, considerations such as reducing the total cost of operating the flight are currently given a higher priority than minimising the fuel burn and pollution.”

Boeing 747-400 pulling Contrails at high altitude. This fabulous photo was taken by Sergey Kustov

This needs to be put into context.

Way back in time, I used to create flight plans professionally. This was done by hand and was sometimes quite time consuming, and required careful study of aeronautical charts, upper air weather, including icing levels, and any forecast areas of turbulence.

A Transatlantic Chart showing the Entry and exit waypoints for the North Atlantic Track System

The charts would also be checked to see the locations of forecast Jetstream activity.

A quick explanation here about Jetstreams.  Jetstreams are caused by two factors. Firstly, solar heating, which causes massive air movements, combined with the effects of the earth’s rotation (The Coriolis Effect).

Image courtesy of NASA

At lower levels, these air movements are known as Trade Winds, and two hundred years ago, clipper sailing ships used them very effectively to transport goods relatively quickly around the globe, hence the name.

Most weather phenomena is generated in the troposphere, which extends from the surface up to high altitude (30’000 feet at the poles, and 56,000 feet at the equator), and it is at these upper levels that we find the jetstreams.

Jetstreams are defined as winds with a minimum speed of more than 70 knots (80 mph), and often they may exceed 220 knots (250 mph) and so it makes economic sense to make use of them.

This has been recognised by the aviation airspace regulators, and specific routings that take advantage of the jetstreams have been in place for many years.

Typical Jetstream activity over Euope.

Each night, weather data for trans-oceanic flights is analysed, and tracks are optimised to use the flows sensibly.

Flights crossing the Atlantic use a system known as NATS (North Atlantic Track System). In simple terms, a number of tracks are generated for both easterly and westerly traffic that will enable aircraft to benefit from a tailwind, or at least a reduced headwind.

These tracks will move north and south over the Atlantic according to the weather and the predicted positions of jetstreams; sometimes tracks will start to the north of Scotland, and terminate in the far north east of Canada.

On other occasions tracks will run to the south of the UK, and cross the southern part of the north Atlantic joining the continental air route systems as far south as the Canadian/US Border.

Typical NAT Tracks. Westerly tracks, showing available flight levels for each alphabetically-identified track.

So, flights across the Atlantic already have some basic fuel saving principles built in advance. The same system operates for flight crossing the Pacific Ocean, known as PACOT tracks.  They run between the western seaboard of the USA and Japan and Asian destinations.

However, times move on, and grey-haired aviation expertise has been replaced in almost every arena with technology.

Modern computer-based flight planning systems are extremely sophisticated, and use some advanced algorithms to plan with even better accuracy.

Consider this.

Every nation has the right to charge a fee to every aircraft that uses its airspace. Airspace charges may be based on the time that the flight remains within that state’s territory.

So, modern flight planning systems will look at every aspect of the flight. It will perform calculations that compare fuel burn with overflight charges.

Sometimes, whilst flying in a Jetstream will burn less fuel, it may mean that the flight will pass through airspace with relatively expensive overflight charges. If the overflight charges amount to more than the cost of fuel, then the system will plan to use the cheaper route, and therefore save money overall.

Airlines also use a system known as Cost Index to further optimise the flight costs.

This is basically a system that compares the direct operating costs of the flight, with the cost of the fuel being used. If the direct operating costs (crew wages, navigation charges, cost of galleys and airframe hours – affecting the amount of maintenance required) are more than the cost of fuel, the system will plan to fly faster, burning more fuel in order to get on the ground faster. Conversely, if the fuel is more expensive than the direct operating costs it makes sense to fly slower, burning less fuel.

Airlines are extremely cost conscious, and low-cost carriers will do everything they can to reduce and eliminate costs wherever possible. For example, Ryanair removed paper safety cards as they wear out and need replacing. Now, their safety information is riveted to each seatback.

Ryanair Boeing 737 – and Safety Cards riveted to the seatbacks!

Some carriers do not serve peanuts, as if they drop into the seat mounting rails, they take time to remove, and time is money.

So, persuading airlines to always optimise their routes and use high speed Jetstreams to the fullest extent may take some time.

Stay Safe…

Categories
airlines Airport aviation Driving Flight Motoring Society Transport Travel Vehicles Work

The Happy Commuter

Not many people can say that they enjoy their daily commute with any degree of truth.

I am an exception to this rule.

Yesterday morning, I softly shut the front door, and swiftly double locked it. As I walked briskly to the car, I noticed that it was cloaked with water droplets from the previous night’s heavy rain, and they shimmered in the alabaster cold moonlight, ruffled gently by the almost imperceptible breeze.

I looked up the field, and could just about make out the old farmhouse through the light mist. The sky overhead was as black as tarmac, and the stars glittered like shards of broken glass.

I smiled to myself.

It was 0445, and I was about to drive from rural Hampshire to Heathrow Airport for my early shift.

The car was chilled as I started it up, and I decided to be very self-indulgent, and switch on the heated seats, as it was only 0.5°C. By the time I reached the tiny hamlet of Bramshott, the warmth was permeating my back nicely.

The back lanes had treated me like royalty this morning. First, an unscheduled stop to enable a family of Muntjac deer to slowly amble from one side of the road, to the nature reserve on the other.

A Muntjac deer, Shy and beautiful. Photo courtesy J J Harrison

A few minutes later, I found myself driving parallel with a barn owl, sweeping effortlessly along the field to my right.

Photo courtesy Peter K Buriam. Barn Owl in flight.

Fantastic!

Accelerating up the slip road to join the A3, a quick glance in the mirror showed that there was no evidence of other vehicles heading north – not even a headlight beam.

Once the car was comfortably at the legal limit, I engaged the cruise control, tuned in my favourite radio station (Greatest Hits Radio) and took a sip of coffee.

Oh, the joy of fast cruising on an empty highway. No vehicles, and just the occasional truck heading south to Portsmouth to dip my headlights for.

The tarmac was damp, but not slippery, and I managed to get all the way to Guildford, some 17 miles before I spotted another vehicle heading north.

By Ripley, his headlights were just bright dots in the mirror.

The M25 was equally quiet, relatively speaking. Busy with articulated lorries, many bound for the airport, and some diving off down the M3 to head to the docks at Southampton.

In some respects, this was a bit eerie. In the past, even at this early hour, the western segment of the M25 would be busy with cars; airport workers and passengers, all heading for the terminals.

Lockdown was having a huge effect. The airport was just about surviving, but with so few movements, staff were either on furlough, or redundant. On the upside, air pollution was significantly reduced, and my journey time was reduced by twenty minutes.

Once off the motorway, my drive takes me through Staines, Ashford, and Bedfont, all of which are pretty deserted.

At this time of day, the lunatics and muppets are not about – still asleep I guess. Most of those that I encounter are driving safely, at the limit, and are courteous and helpful.

This doesn’t happen at 0445 on the A3… All the loons are in bed.

I pass through the security checkpoint at work very quickly.

Well, to be fair, I am the only vehicle in the queue.

My shift start time is conveniently placed between the end of one shift and the beginning of another, so there is rarely a wait before driving through the massive security gates, and onwards to the staff car park.

Early shifts are a pleasure. Definitely the best time of the day.

According to my mother, I have been an early riser since I was an infant.

I went through a phase as a grumpy teenager when I would sleep in until lunchtime, but that was more as a result of imbibing vast quantities of alcohol with my friends, until late in the evening every Friday.

I would get home, and crash out, on many occasions still fully dressed, not to be seen again until the sun was very much over the yard arm.

Despite the amount of beer taken on board, I was lucky to have never had a hangover either!

Leaving my teenage years behind, I became an early riser once more.

Working in the aviation industry, for a major airline I was a shift worker, and enjoyed a variety of start times, varying from 0500 to 2200 starts, and other shift starts between these two extremes.

0500 starts have always been my favourite though.

Summer “early-earlies” would see me quietly leaving the house, walking down the garden path in the pre-dawn glow of a brand-new day.

At the time, I was living in West London, about 5 miles from the centre of London Heathrow Airport, so it was a short drive to the staff car park.

In Spring, I would revel in the cool stillness of the morning. The sun would be shyly peeking over the gardens to the east, gilding the slate roofs of Bedfont with a golden glow, doing far more for the houses than a complete renovation would achieve.

Summer would offer somnolent dawns, warm, dappled and filled with birdsong and I would drive the deserted roads around the perimeter of the airport, usually not seeing another vehicle until I was within the airport restricted area.

Standing at the staff car park bus stop, it always surprised me that so many of us early shifters looked so tired, disengaged and sleepy.

I was, and still am, one of those awful people that are immediately ready for the day ahead as soon as their eyes are open.

Poor SWMBO, with whom I have shared my life for over 30 years, is a night owl, and doesn’t function correctly until the correct number of coffees have been emptied into her!

So, I would bask in the sunshine, waiting for the bus, whilst the others round me were slumped against the glass walls of the shelter.

The buses back then were a climate activist’s nightmare. Operated by the British Airports Authority, they were probably ten years old and to be frank, were knackered. Originally painted in bright traffic yellow, they were battered and grimy, both inside and out.

They rattled, creaked and generated more diesel smoke than an ocean liner, and would grind their way round the airport perimeter road, making only one stop at the staff bus stop in the central area.

I would then enjoy a brisk walk to Terminal 3 check in for work.

Autumn 0500s were enjoyable too, but in a more melancholy way. I would still leave the house at 0430, but now the sun was reluctant to welcome the day, and I would walk through the crispy leaves to the car in the half light, now needing to wear my light bomber jacket, thoughtfully provided by American Airlines.

As the seasons marched on, I would have to leave the house at 0420, to give me sufficient time clear the ice or snow from the windscreen.

Whilst I used a de-icing spray in the hardest weather, I often had to scrape the ice from the car, and the sounds would be amplified throughout the quiet residential street, reverberating and bouncing off the houses, and shattering the stillness.

I used to feel guilty about this, until I realised that most of my neighbours were shift workers as well, and we all took it in our stride.

I stopped working at the airport in 1997. I had been lucky enough whilst working with American Airlines to see many aspects of airline operations, Passenger Services, Passenger Security, Special Services, and Flight Operations.

I had sat in a deserted ops room, watching the flights departing the US, and plotted their arrival times, and planned the parking stands for the day.

I had sat with my heart in my mouth in the early hours of July 18th 1996, after hearing reports that an American aircraft had crashed into the Atlantic off the coast near New York.

It turned out to be TWA flight 800, and not one of “my” flights, but still a tragic loss of 230 human beings.

I had searched aircraft, operated security equipment, and interviewed suspect passengers.

I had escorted celebrities and VIP as they transited both Heathrow and Stansted airports.

Flight operations was my element though. It was what I was trained for, what I enjoyed, and what I understood.

However, promotion in the Flight Operations sector normally requires the transfer to a job that is no longer practical and hands on, but is more of a specialist desk job.

So, after many years with the mighty American Airlines, I started work with British Airways, working out of the fantastic Compass Centre.

The design of Compass Centre makes use of curved glass external walls on the south side, which overlooks the airfield. Curved glass walls were chosen as glass does not present a large radar signature, and the curved walls reflect radar energy onto the ground.

This reduces the building’s radar reflection on the ground movements radar used at the airport. The building is also thermally efficient, and summer afternoons caused the air conditioning to run at full power, despite the floor to ceiling blinds.

I was very privileged, as my department occupied the middle floor of the eastern-most block, and overlooked the runway. My desk was three feet from the glass windows, so my viewpoint was superb.

Compass Centre, My office was the middle floor of the module nearest the camera.

My job was now a standard day job, with working hours of 0800-1600. I now had to drive on roads that were filled with other commuters, some of whom appeared to have forgotten the most basic driving skills.

Luckily, this didn’t last too long, and I soon transferred to the Flight Training School, where I began working as a Flight Crew Instructor. Not only was the job hugely enjoyable, but luckily, I was back on a shift roster.

My office… I could never be an accountant!

Most of the instructors weren’t keen on early starts, so I happily swapped out their earlies, and off-loaded my late shifts. Every day was an 0630 arrival, so I was normally out of the doors at 1430, and was able to use the rest of the day for my pleasure when the rest of the world were slaving away in their offices.

I am now getting towards my personal Top of Descent, and I am thinking more and more about retirement.

If you ask people what they like most about their retirement, the most common response is “Not having to do the daily commute”.

I think that I will miss my enforced dawn patrols, when the day is new, and you can smell the freshness of the dawn.

What about you?

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Was it That Long Ago?

Exactly 44 years ago today, I passed my driving test.

I was seventeen, and was being taught to drive by my Father. This was for two reasons. Firstly, in order to wean me off motorcycles, he offered to do it for free, and secondly, I had bought a car in which to learn. 

My first car was a twelve-year-old Morris 1100 saloon. It was, in many respects, a great car to learn to drive in.

Not my car – but the same model and colour

It was a simple machine, with no clever safety systems – apart from old fashioned lift latch buckle seat belts.

It didn’t even have any real “comfort” systems if you exclude the two-speed fan assisted heater.

Its front wheel drive made it easy to drive round the country lanes of Sussex where I grew up. 

The Morris 1100 was quite revolutionary when it rolled off the production line in 1965. It used the new space-saving BMC-designed Hydrolastic suspension system. 

To put it simply, this system replaced the springs and shock absorbers used in conventional cars with rubber bladders known as displacer units at each wheel.

The front and rear bladders on each side of the car were connected together with pipes and valves. When the front wheel encountered a bump in the road, it would force fluid from the front bladder to the rear bladder, which minimised the pitching of the car over bumpy roads.

It also had a brilliant side effect for a learner. It made hill starts really simple.

On a hill, with the parking brake applied, all one had to do was engage first gear, cover the brake pedal, and let the clutch up slowly. The vehicle would then gently rise up on the rear suspension. As soon as this happened, the handbrake could be removed without the car rolling backwards.

I must say it helped me considerably!

So, back to the point. 

I had applied for my provisional driving licence and got it back in time for my 17th birthday. I had to buy my very first driving insurance policy out of my meagre apprentice pay, so it was a third party only policy. 

The good old paper driving licence, showing provisional driving entitlements. Not mine though!

I guess this was a bit of a calculated risk. I assumed that it was a little unlikely to spontaneously combust, and any self-respecting car thief would be horrified to steal such a shabby looking car – especially one that had a slightly Miss Marple image.

For my first lesson, it was decided that we would leave the house very early to avoid traffic as much as possible. We agreed that we would use quiet country roads to start with and then progress to busier streets and towns. 

I jumped in the passenger seat, and we drove sedately to the south west edge of the town, heading for the village of Turners Hill. 

Dad pulled over onto a layby at the right, and we swapped seats. 

After 44 years, the lay-by is still the same…

Crunching the gears, I kangarooed off on the start of my driving adventures – and all without the aid of dual controls!

An hour of driving up to the village, turning around, and driving back to the layby resulted in me being able to change up and down the gearbox, and smoothly pull away.

So, it continued. Practicing reversing into a parking bay on the Imberhorne industrial estate, reversing around a corner, and three-point turns. Hill starts without the car rolling backwards and crushing the matchbox that my father had placed behind the rear wheel.

Eventually, after a few months, Dad pronounced me ready for test, and so I applied. Crawley was the closest test centre, so in preparation I regularly drove the family over to Crawley for Saturday shopping, and was reasonably familiar with the place.

I eventually got my test date, which was the 2nd of February 1977. This was a Wednesday, and Dad couldn’t get leave to get me to the test centre.

Luckily, one of my Air Cadet friends who had passed his test the previous summer offered to take me.

My test was as simple as my car.

Upon arrival, I reported to the receptionist, and she asked me to take a seat. In due course, I met my examiner; he looked a little like Sherlock Holmes, complete with a deerstalker hat.

Having checked my provisional driving licence and my insurance documents, he asked me to read a nearby car number plate, which I did with ease. Not sure I could do it today without my varifocals!

Without further conversation, we got into my car, and I drove around Crawley, following his directions. 

The emergency stop was for real, rather than him banging on the dashboard in accordance with his briefing.  I was “making good progress” and driving at just under the posted 30 MPH limit, when a car suddenly pulled out of a side junction.

I slammed the brakes on, and the car rapidly came to a stop, without me locking any of the wheels up and skidding on the cold damp tarmac.

The deceleration forces were impressive. His clipboard shot into the footwell, and he pitched forwards. “Oh god” I thought, please don’t let the examiner break his nose on my car”

Luckily, he didn’t. Leaning back into his seat, he turned and smiled at me. “That was very good. I shan’t be asking you to do a further emergency stop.”

Having completed all the required test items, we drove back to the test centre, and he fished a folder out of his battered briefcase.

Flipping through the folder, he randomly selected road signs and marking and asked me what they represented.

I obviously answered correctly, as he ponderously got out of the car and trudged back to the warmth of the test centre.

He gravely started filling out a document. Was it a failure or pass certificate? 

“Well done Mr. Charlwood. You have passed. Congratulations!”

So – I was one of the 40% of test applicants that passed their test first time!

I thanked him, and went to see Andy who was waiting patiently. “Well?” he enquired. “Am I driving back, or are you?”

“I am” I said proudly. We went to the car park, and ceremoniously ripped the L plates from my car, and I nonchalantly tossed them onto the back seat for disposal later.

We then drove to Brighton and back on the busy A23. 

Just because we could!

However, things are very different now. 

The driving test has metamorphosed into something much more complex. Hill starts and reversing round corners have been removed from the test, and navigating whilst driving using a GPS Satellite Navigation system has been included. 

The almost casual theory questions used by my examiner in his ring binder are gone – replaced by a formal theory test, which is computer based. 

The theory test also includes a hazard perception test, using 14 short video clips to establish whether the candidate has good recognition of developing hazards and risk assessment skills.

Bizarrely, (in my opinion) candidates may use vehicles that have hill start assistance systems.

In my world of professional aviation, skills tests are conducted using the equipment fitted to the aircraft, but candidates still have to demonstrate navigating or performing the required manoeuvres with the enhanced systems shut down, thus demonstrating that they can control their aircraft in all situations.

Having said that, my car is fitted with a hill start assist system and there is no means of disconnecting it. I guess thats the same in most current cars. Unless you know better?

I must add, somewhat smugly, that it never activates, because I was taught how to do a hill start using blended clutch and brake control.

The driving syllabus and the test upon which it is based unfortunately lags considerably behind the rapid development of Autonomous Driver Assistance Systems (ADAS).

To illustrate this, new drivers are not currently required to be taught the use of cruise control, or to recognise its limitations, and how to use it safely.

So, where do YOU place your feet when the cruise control is active and engaged?

I keep my foot over the accelerator. Some people I have driven with place both feet onto the floor.

I find this a little startling. 

Simple risk assessment shows that it is possible to lose spatial awareness of where the pedals are in relation to the drivers’ feet. In an emergency, do you really, instinctively, know where the brake pedal is?

New vehicles are loaded with ADAS, and whilst many younger drivers may not be able to afford new cars, they should still be aware of the types of systems available. New drivers may be renting cars to which these devices are fitted, or be given a company car which has many safety systems fitted as standard.

Statistics show clearly that the highest risk groups for accidents are very young drivers (17-21), and the elderly (80+) both of whom may not have sufficiently developed judgement to ensure their safety. 

Both groups are unlikely to be driving the latest cars which have the additional safety systems.

So maybe those that need a good understanding of ADAS and would benefit from the additional safety, are the drivers most unlikely to have a car fitted with it.

At some point the driving syllabus and the test will address these issues.

Until that time, all I can say is…

Drive defensively and learn as much as you can about the systems that YOUR car is fitted with.

Go well, and be safe!