Poor road surfaces are exposing cyclists to vibration-related injuries more commonly found among people working with vibrating machinery, according to research from Scotland.
Symptoms of the condition, known as Hand-Arm Vibration Syndrome (HAVS), include fingers becoming numb as well as having pins and needles, plus aches in the arms resulting from bone and joint damage.
The Herald reports that researchers at Edinburgh Napier University have developed a bike that, equipped with a camera, sensors and computer, measures vibration from road or cycle path surfaces.
Retired surgeon Professor Chris Oliver, a former chair of Cycling UK in Scotland, who co-led the research, will be presenting the findings in Edinburgh next month at the 54th UK Conference on Human Responses to Vibration.
He said: "You can be exposed to vibration from many sources – a lot of industrial equipment can expose it to you. There's vibration from sitting on a bus.
“You can get back pain and damage to the discs in your spine, or if you get vibration through your hand it can damage your nerves in your hand – sometimes permanently.
"One of the things we did at Edinburgh Napier was to develop a bicycle that measures vibration transmitted from the road to your hands.
"We've shown that some road surfaces can cause toxic doses of vibration. The bicycle collects huge amounts of data."
He contrasted the attitudes in many European countries regarding minimising road surface vibration for cyclists with those prevailing here.
"The Dutch have whole books and guides on how to build a smooth road, but we don't have that kind of thing in the United Kingdom at all,” he explained.
"If you phone up Edinburgh City Council and ask how smooth the roads are they'll say 'well, we fix the potholes'. That's not enough.
"We know that some road surfaces around Scotland cause hand-arm vibration syndrome – HAVS – and that's an industrial disease."
A spokeswoman for Cycling Scotland said: “Potholes and uneven surfaces can have an impact on people cycling, in terms of both discomfort and safety, and it will be interesting to see the results from this research.”
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You realise what a completely different sport road cycling is when you're on a very rare stretch of smooth tarmac. Then you're back on "normal" surface and the relentless vibrations start again, sapping the joy out of cycling. Realistically, for most roads where I live -- West Sussex -- a gravel bike is a much better option than a pure road bike.
The answer is to move to mid-Wales and reap the benefits of smooth road surfaces courtesy of EU money. Here in SE England, I've moved from 28mm to 32mm tyres, and use double mitts.
Bradford's roads are notoriously bad, but even I was shocked at the state of the surfaces in Liverpool, and that was in a car. At least you know it's down to poor maintenace and no money.
Top dressing is a scourge, and that on roads that are actually being maintained. Apart from a rogue badger, my scariest and most abiding memory of the Dunwich Dynamo was coming upon a bank of gravel where an undressed road met a 'dressed' surface at a sweeping junction. I imagine running aground on Chesil Beach in a south westerly gale would have felt much the same.
So I remember a motorway program on TV saying the network is subject to the standard of no variance of greater than 10mm in 2m of road (hardly an engineered surface finish but its something), but common roads are a free-for-all of whetever councils think they can get away with?
I still maintain someone should take a highways dept of a council to court on breaches of HSE laws regarding lethal infrastructure. Might have more weight if the individual is an employee of said council, but it would benefit everyone if such a test case forced universal standards that all councils had to adhere to. HAVS from abysmal surfaces, dashed white line cycle lanes, lanes that start and end arbitrarily, lethal junctions inc Constant-Bearing-Decreasing-Range (CBDR) type scenarios, pinch crossings on blind corners, and woeful roundabouts are all things that force fatal scenarios, are cheaply and quickly avoidable, and yet are so commonplace we barely recognise them anymore
I left my house couple of years ago and they did that spray and chip and as soon as i hit it, within seconds my crud roadracer shattered due to the loose stones sticking to my tyres and rotating to the narrowest point, i had to take it off and hide it and collect it later, and i had to ride on the pavement until i got past it all, was so pissed off.
The only solution then is to get a full sus MTB, a bit ridiculous really.
Theres a bloke regularly rides around central Bristol on the fattest fat bike I've ever seen, maybe he's just concerned about vibration?
Perhaps if (road) cyclists finally understood what pneumatic tyres were invented for...
Edinburgh Council? "Fix the potholes"???
Aye, right!!
I've lived in Edinburgh for the past year and I've never known such universally awful roads. The main roads are bad enough but away from them the surface is a patchwork of potholes, lumpy, bodged repairs and loose broken tarmac.
Edinburgh is my home town and though I haven't lived there in a long time, I still go back regularly. The city's road network is in a very poor state. Repairs have been cut to the bone and tend to be done on the cheapest of the cheap. Note though that the city's traditional cobblestone paved roads have always been very bumpy to ride on.
Mind you, I've seen far, far worse. I remember travelling to Berlin in 1990, not long after the wall came down. You could tell you were in the former east, just by the vibration caused by the road surface.
And even those roads were way better than the ones I used to travel on when I lived in West Africa.
There are a few routes I've given up on due to vibration related problems. Literally 30 minutes in and the hands will be numb.
I have come back from rides with numb thumbs from the vibration. Gel track mitts work well, but the roads ought to be smooth enough for all users, not just drivers.
The worst is surface dressing, where a layer of tar is laid and gravel scattered on top, which not only creates massive problems with drifts of loose gravel on corners, but the vibration is appalling. I brought this up many years ago with DfT to be told that cyclists didn't count and they had to do the roads for drivers. I wonder if it would be possible to sue them for vibration damage caused by their awful roads?
in my neck of the woods it’s called spraypave, and they use it because they’re cheap and no other reason. It’s not a big problem for motor vehicles as the traffic compacts the aggregate into the tar, making the surface relatively smooth over time. But cyclists, unless you put yourself in harms way and ride far enough into the lane to use the wheel track from motor vehicles, it’s diabolical.
One of my local roads was resealed a couple of months ago with spraypave over the asphalt which was still in good condition - the vibration is so bad the mirrors on the Catrike were rotating, these are Mirrycle bar end in vertical mount posts and were tight enough that I couldn’t realign them without tools. I had to stop because it was giving me double vision!
I'd love to sue someone for what they did to the A104 Epping New Road up to Epping Forest. Worst rough chipping surface of all time, on a long uphill, and worst of all (of course) in the narrow bike lane with its manhole covers and detritus. It was the best way out of London on a bike before that, lovely forest all the way, only half an hour after leaving central London.