glasgowcyclist
Charming but somewhat feckless
- Location
- Scotland
Cyclists get pulled for 39mph in a 30 limit.
- Thread starter Cycleops
- Start date
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rogerzilla
Legendary Member
They are highly fallible. GPS records of speed limits don't keep pace with changes, and camera-based systems pick up signs on adjacent roads. My car was moaning at me on the motorway because there was a 20mph sign in the construction lane to the left. It often picks up erroneous limits from side roads, like here:
Northampton Rd
https://maps.app.goo.gl/Zh5Ej4UynwwFdSrz7
Note the error can be too high or too low - it's not failsafe at all.
Most of the driver assistance rubbish required on modern cars to pass NCAP is highly fallible. LDWS can be lethal if you need to swerve over a white line. "Smart" City Brake panics when you have to weave along a street with parked cars. Adaptive cruise control panic-brakes if you go round a curve and a car in a different lane seems to be in front, or if a car leaves the carriageway for a slip road. Luckily it can all be turned off on my current car, which it couldn't on the previous one.
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mjr
Comfy armchair to one person & a plank to the next
- Location
- mostly Norfolk, sometimes Somerset
I thought e scooters had GPS -controlled speed limiters. If they can work around any reliability problems, why can't less vulnerable road users?
the_mikey
Legendary Member
- Location
- South Gloucestershire
I think the police should probably not use X as their primary social media outlet. The cyclists probably should scrub some speed off.
Profpointy
Legendary Member
It's about kinetic energy or momentum. A 100kg bike plus rider doing 30mph has 5% of the KE or momentum as a 2000kg vehicle doing the same speed
Following this logic is why a car or motorcycle is allowed to do 70mph on the motorway but a heavy lorry is only allowed to do 56mph
Profpointy
Legendary Member
Quite! Whilst not exactly OK, the kiddie would likley have been killed or at least very seriously injured by a 1 or 2 tonne car doing the same speed
classic33
Leg End Member
I paid for someone else's shopping once. She'd lost her purse, and was getting worked up at not being able to pay for it, she'd put it back. Unpacking her bags. Apologising for delaying everyone. There was only me behind her.
Easiest way to calm her down was to pay for it. It was a little over £10.
Alex321
Guru
- Location
- South Wales
Not linked to road speed limits though. It is easy enough to put in a limiter which uses GPS to determine speed, but sets a fixed limit.
The issue is reliably knowing what the limit is on any stretch of road, and varying the limit accordingly.
There have been attempts to do I, as noted above. But I know when I was using the GPS satnav on my phone, which supposedly showed speed limits and flashed up a message if you exceeded them, they were quite often wrong. Though that was 5-6 years ago now. I've had a car with built in satnav since late 2019, which doesn't attempt to show speed limits.
There is also the issue that limits change (and even new roads are built) and you normally have to pay for map updates, at a fair sum.
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DaveReading
Don't suffer fools gladly (must try harder!)
- Location
- Reading, obvs
I'd guess that the market for e-scooters that actually have satnavs with a roads and speed limits database is vanishingly small.
berty bassett
Legendary Member
- Location
- I'boro
Once someone said ‘ provide the stats of anyone ever maimed by a bike travelling at 39mph’ I knew what way this thread was going . Have I got any stats - no , does this mean no one’s been maimed by idiots travelling too fast - definitely not . If this was a motoring forum there would be someone arguing that with all new tech in cars with sensors controlling direction and speed , all powerful braking systems and computers overriding some decisions that the speed limit is outdated and should be raised . There is always someone who thinks this shouldn’t apply to me because I am better than average but speed limits are out there to keep the average person from accidents . I can’t see the problem with bikes keeping within limits myself and can’t see a problem with law being changed - that’s not saying I never go over 30 in a 30 area , if conditions are right it’s easy , nothing to get excited about . Only today on facecrack there was a complaint by a motorist coming downhill where two young teenager girls were jumping out in front of cars to make them swerve or stop - if this happened while I was riding bike down said hill , dodging potholes while being aware of car up my backside , 2 youngsters jump in road , I think I would find out that I couldn’t stop safely in time - but that’s just me , I understand there are some who would stop , escort girls back to the kerb , check tyre pressure and have a swig of drink all before the car behind even touched his brakes . I don’t think I will follow anymore on this thread as I now just think there are some who think it’s fine and some who don’t and it’s just going to keep going on and on , so all I will say is do what you want , hopefully it makes not a jot of difference to me 👍
Slick
Guru
Great point, and proves an unconscious bias in me as I wouldn't in a car, but happy to discuss on here how we forgot to come out the pub and got on the bikes to pitch our tents in a bit of a rain storm.
