HGV's in lane 2. Grrrr...

mrbadexample

Treadway1 wrote: »

As someone has already said though, it really all depends on the tread depth left on the tyre. With around an inch (if not more) of tread on a new tyre, when it starts to wear low, your gonna be able to go [STRIKE]faster[/STRIKE]....

Slower.

Treadway1

mrbadexample wrote: »

Slower.

You know, I actually sat for about 10 minutes before posting that, even spinning my fingers around each other in order to try and figure out exactly which one it should be (I do know, just always forget and get them mixed up!) but still got it wrong:rotfl:

I gave myself a headache doing that as well!

mrbadexample

Treadway1 wrote: »

You know, I actually sat for about 10 minutes before posting that, even spinning my fingers around each other in order to try and figure out exactly which one it should be (I do know, just always forget and get them mixed up!) but still got it wrong:rotfl:

I gave myself a headache doing that as well!

It's a relatively common trick to try and gain a little advantage. You take your truck in to be calibrated with the barely-legal (e.g. 1.1mm) racing slicks on the drive axle. When you get it back, you put the brand new set on and it'll be a wee bit quicker. Failing that, not many people would notice if you put a larger tyre size on altogether (although that would not be legal). :whistle:

Mids_Costcutter

jolester wrote: »

I travel down the M42 each day to and from work, J9 to J10, where there are NO restrictions on LGV's in lane 2 - unfortunately there are only 2 lanes anyway on this part of the motorway and it causes huge tailbacks.

You can especially see it on the opposite side of the carriageway......empty motorway..... empty motorway..... empty motorway.... oh there we go, truck at 56 mph attempting to overtake a truck at 55 mph and a huge queue of traffic stuck behind. :mad:

Hope that I can provide some evidence for this 'debate':

The HGV overtaking ban is on the M42 northbound lane between junctions 10 and 11 (near Tamworth). The aim was to reduce congestion and cut the risk of accidents caused by slow-moving traffic on an uphill, two-lane section. Results of an 18 month trial showed that overall average journey times have improved for non HGVs. HGV journey times remained unchanged in the morning peak and improved at other times. More information at:

http://www.highways.gov.uk/roads/projects/5899.aspx

Froggitt

Great info - thanks Mids.

Imagine what the impact would be on the M25 or M1.

zorber

LandyAndy wrote: »

But they are limited by law to 60mph on Mways and dual carriageways.

Anyway, as you say, there aren't many of them in comparison to HGVs.

Umm just like cars are restricted to 70mph:D

zorber

angeltreats wrote: »

I've actually lost count of the number of times a lorry driver has eased off a bit to let me onto the M5 of a morning (and I always make sure I thank them ). I've also lost count of the number of car drivers who give absolutely no consideration to people trying to merge from a slip road.

Also the end of my road turns onto a bigger, extremely busy road. It's not unheard of to sit for ten minutes trying to get out. And when someone does let you out, maybe seven times out of ten it's a lorry driver.

I'm a horrid impatient driver, but I have absolutely no problem with a lorry overtaking another lorry rather slowly and holding up the traffic for a few minutes, because I can imagine what it's like to need to keep your momentum (anyone who needs a lesson in the importance of momentum should try driving a severely underpowered car up Birdlip Hill on the A417, especially if someone pulls out in front of you and slows you down). I also know how tired and stressed I get just from driving 80 miles a day, so hats off to these blokes who spend half their lives driving.

As far as cars go though, whoever said that middle and outside lane hoggers should have their cars crushed was spot on

Are you my twin??? i could have writen this experiance all the way down to birdlip hill. :beer:

zorber

iolanthe07 wrote: »

Why all this antagonism? Surely virtually all lorry drivers are car drivers too? They must know how frustrating it is to sit in a car behind one lorry overtaking another one on a dual carriageway at +0.5 mph, but you can't expect all lorries to have to travel at the speed of the slowest - that would be ridiculous.

Off topic, but are our lorries underpowered? I ask because when I lived in the US I noticed how their huge trucks, even when loaded, seemed to zip up hills much faster than ours can.

Yes but when gas cost a fraction of what pertrol and diesel cost over here they can afford to have 20litre v24 engines. Which moves the topic nicely on to fuel duty :mad:

zorber

Treadway1 wrote: »

As someone has already said though, it really all depends on the tread depth left on the tyre. With around an inch (if not more) of tread on a new tyre, when it starts to wear low, your gonna be able to go faster....

How do you work this then. If the diameter of the tyre is 2 inches more on a new tyre and is doing the same number of revolutions as a tyre with no tread the the tyre with more tread will be covering more distance (as its has a bigger diameter) and hence going faster.

rev_henry

zorber wrote: »

How do you work this then. If the diameter of the tyre is 2 inches more on a new tyre and is doing the same number of revolutions as a tyre with no tread the the tyre with more tread will be covering more distance (as its has a bigger diameter) and hence going faster.

I think this effect is vastly outweighed by the decrease in rolling resistance from having much less tread.