like some sort of special training and a plan on how it operates?
UK - New 80MPH speed limit
- Thread starter Grande Mark
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UK - New 80MPH speed limit
i dont see how banning buses and coaches from overtaking trucks is a good idea
HGV (Trucks):- limited to 90km/h
PSV (coaches/buses):- limited to 120km/h
what other restricted vehicles are their? anything over 7.5 tonnes legally requires a Tacho. iirc post vans aren't tacho'd nor is there any legal requirement for them to be they're basically privately owned couriers.
Tacho law and driving hours is properly complicated with different vehicles being eligible and others that are exempt. it all depends on what work the vehicle is doing and the legal requirement to log either hours and speed, or just speed.
the reason you will get HGVs doing different speeds is dependant on what the operating company decides what speed they want to run their vehicles (upto a maximum of 90km/h) and the tyre wear when the vehicle was calibrated.
for instance you can send a unit for tacho calibration with legal minimum re-cut drive axle tyres on, then when it comes out of the tacho station put brand new tyres on. (the vehicle equipment will still be legally calibrated to 90km/h, regarless of tyre wear, as long as its of legal depth)
knackered tyres can be recut (ONCE) to a depth of 7mm
there is 20mm tread on a new drive axle michelin tyre
taking into account the HGV 1mm legal minimum wear depth it is possible to achieve 25mm extra on the radius of the tyre (50mm over the diameter)
lets do MATH!!!
295/85 22.5 is the tyre size of most common trucks drive axles
85% of 295 is 250.75 so lets call it 251mm
half the rim size is 11.25 inches so thats 285.75mm lets call it 286mm
251+286= 537mm RADIUS
Double it for Diameter = 1074 mm
rolling radius is = 3374mm ('Truck A' with new tyres)
now do it for a recut tyre at legal minimum. we have established that between a worn recut and new tyre is 50mm over the diameter so diameter would be 1024mm
rolling radius of that is 3217mm ('Truck B' with worn re-cut tyres)
Now theres a massive 157mm difference in rolling radius so for every drive wheel rotation 'Truck A' is travelling 157mm FURTHER than 'Truck B'
im bored now but you can imagine how much faster Truck A will be travelling even though both the tachos are limited to 90km/h
All RM vans are speed limited
i didnt remember correctly
if coaches are limited to 75 how come they overtake me when i am doing 80?
What condition are their tyres in though! This picture was taken of the front right tyre of an RM van!!!! Told him and he was shocked. Turned up next day with a new tyre on that corner
I expected him to be arsey but he was grateful Attachments
What condition are their tyres in though! This picture was taken of the front right tyre of an RM van!!!! Told him and he was shocked. Turned up next day with a new tyre on that corner
He cant be arsy given he will have filled in a check list to say he checked that tyre that morning, as part of the daily checks they are obliged to do
I know for a fact RM are in a flap just now about stuff like that and the fines int cant hit them with
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He did say he'd checked it. Tbh it was on the very inside of the tyre and could only be seen because the wheel was turned all the way out. Tyre still had sufficient tread.
Silly H+S rules meant he couldn't change the tyre!!!
well not so much silly
hurt yourself changing it and cant work
RM wont pay you and you may face disciplinary action
3217/157 = 20.49
100/20.49 = 4.9%
4.9% of 120km/h = 5.88km/h
125.88km/h = 78.22mph
allowing for your speedo being out, id guess, 80 on ur speedo could be as low as 72mph.
ive got a croma our speedos arnt out like the rest of fiats, matches satnav
i dont know what them sums are i put 120km into an on line converter
i dont know what them sums are i put 120km into an on line converter
What condition are their tyres in though! This picture was taken of the front right tyre of an RM van!!!! Told him and he was shocked. Turned up next day with a new tyre on that corner
I think I'd get better tyre wear out of a tyre made of jelly.
sorry dave
3217(worn recut)/157 (extra if new tyres are fitted) = 20.49 (difference)
100/20.49 = 4.9%
a new tyre will give 4.9% extra speed if a worn recut was used at calibration
4.9% of 120km/h = 5.88km/h
125.88km/h = 78.22mph
if theyre passing you at 80mph i dunno whats going on
(my numbers are only theoretical btw)
3217(worn recut)/157 (extra if new tyres are fitted) = 20.49 (difference)
100/20.49 = 4.9%
a new tyre will give 4.9% extra speed if a worn recut was used at calibration
4.9% of 120km/h = 5.88km/h
125.88km/h = 78.22mph
if theyre passing you at 80mph i dunno whats going on
(my numbers are only theoretical btw)
Surely in an ideal world you'd take the heavy goods between major conurbations by train...then use light vehicles for final delivery or is that madness?
What condition are their tyres in though! This picture was taken of the front right tyre of an RM van!!!! Told him and he was shocked. Turned up next day with a new tyre on that corner
you saved him 3points, if my van has bad tyre's we get the points.
It still had tread, it was just that the tread was delaminating.
Maybe in a massive country. Logistically, the UK is small enough for pure HGV transport.
It's still far better to have freight going on trains though.
Local BBC radio rolled out the parent of a kid who had been ran over and killed in the street during their discussion on the proposed 80mph motorway limit.
If I hadn't been driving to work I'd have phoned up and berated them for taking advantage of this poor woman. Of course she's going to call for lower speed limits - but what has that got to do with motorways? One thing to note is the proposed 80mph limit would only be available on some motorways. The road safety minister made a good point that most people drive at a speed they are comfortable at, taking into account the conditions at the time.
If I hadn't been driving to work I'd have phoned up and berated them for taking advantage of this poor woman. Of course she's going to call for lower speed limits - but what has that got to do with motorways? One thing to note is the proposed 80mph limit would only be available on some motorways. The road safety minister made a good point that most people drive at a speed they are comfortable at, taking into account the conditions at the time.
Is this the same mongister who said this about winter tyres? "Winter tyres wear out very quickly on normal road surfaces and cause significant damage to those surfaces, so they would not be appropriate in the UK situation,"
http://uk.autoblog.com/2010/12/03/transport-minister-slammed-over-confused-winter-tyre-message/
Whilst I think 80 is a safe enough speed for most drivers, I think it's a bad idea in the UK where the standard of driving is so apalling. In France I happily cruised along at 90mph in the 500 and if someone came up behind at speed they did so in a courteous manner and waited for me to pull into a convenient gap for me. Autobahn's were fine too.
