Are Artics still limited to 56Mph?
Discussion
Modern ones with all electronic gizmos are hard to derestrict, anything gets logged in onboard data storage
and can be read by garages (and the law, if necessary).
Older ones are a different story, one of the german Drag Racers had a 500hp Mercedes, derestriced and remapped,
he occasionally got the 12t rig up to 110mph and won some bets with that trick, had to be careful though.
and can be read by garages (and the law, if necessary).
Older ones are a different story, one of the german Drag Racers had a 500hp Mercedes, derestriced and remapped,
he occasionally got the 12t rig up to 110mph and won some bets with that trick, had to be careful though.
Artics are limited to 60mph on dual carriageways and motorways.
The variation in speeds results from dodgy operators, higher accuracy speedos in HGVs, older HGVs with analogue speed systems, fraudulent circumvention devices and slighty less accurate speedos in cars especially older ones.
The 56mph arbitrary limit equates to 90km/h and many rigs are programmed in km/h. Lots of firms such as supermarkets have moved over to 51mph as the eco solution. But then you could have a Sainsburys trailer being pulled by a liveried Sainsburys vehicle and the next day the same trailer could be pulled by a plain white unrestricted subcontractor.
The variation in speeds results from dodgy operators, higher accuracy speedos in HGVs, older HGVs with analogue speed systems, fraudulent circumvention devices and slighty less accurate speedos in cars especially older ones.
The 56mph arbitrary limit equates to 90km/h and many rigs are programmed in km/h. Lots of firms such as supermarkets have moved over to 51mph as the eco solution. But then you could have a Sainsburys trailer being pulled by a liveried Sainsburys vehicle and the next day the same trailer could be pulled by a plain white unrestricted subcontractor.
traffman said:
Reason i ask is on more than one occasion whilst in my company van i have passed Artics doing well over the 56 mph , and struggled at times. One matched my limited speed of 67.
I just thought all of them are limited to 56 by law?
EU law says Set speed not to exceed 90KPH (56mph) when they go for annual testing they plug a unit into the tachograpth which mimics I just thought all of them are limited to 56 by law?
increasing road speed , this makes the engine cut out once the limiter setting is reached , meddling with the tacho or the limiter is a very serious offence ..... the tacho has to be calibrated and very accurate a car or van speedo typicly overreads so a true 56 may be 60+
The Irish boys do like to motor on. The limiters came in when I was about 14 or 15, my dad ended up with one of the first limited trucks that Prestons of Potto got. According to some of the other guys, at the time, it was just a case of pulling a fuse. Not so easy now, but still plenty of older wagons on the road.
Welshbeef said:
What happens if going downhill on M way they take truck out of gear surely it will naturally roll to a greater speed
This. Easy to get well over 80 mph M25 Jct 8-7 Reigate Hill and M40 through the cutting at Stokenchurch.Overspeeds will register on digital tachos so not a good idea to do it if you value your license/job.
gus607 said:
Also don't forget OP that your van will over read by 10%, HGV speedo's are 100% accurate.
"Will over read by 10%"? - Wrong! 
UK Law stipulates that when it comes to car and van speedometers, the indicated speed must not exceed 110% of the actual speed, plus 6.25 mph.
That doesn't automatically mean that they will over read, it simply means that they can over read.
Some will be spot on accurate, some will over read by a small amount, some will over read by quite some margin (one thing that they cannot do though is under-read).
In the OP's example:
traffman said:
Reason i ask is on more than one occasion whilst in my company van i have passed Artics doing well over the 56 mph , and struggled at times. One matched my limited speed of 67.....
If the OP's van speedometer does over read by the maximum amount that the Law allows, then at a true 56mph the van's speedometer would read:56mph x 110% + 6.25mph or 61.6 + 6.25 = 67.85mph
So it could be the case that the trucks are not going as fast as the OP thinks they are, because his van isn't going as fast as he thinks it is.
I remember sitting at 80mph on the m62 for a lot of miles in a Volvo F12 in the early 1990s going for a Liverpool boat that the driver was late for; I was technically a hitchhiker. We got the boat okay, but we were the last ones on the boat.
Back in the day the Eire mushroom men were those with the fastest v8 trucks, low weight and a perishable product needed in the markets meant they pushed the limits.
There are still a few rogues around, but generally compliance is a lot better than it was. I would however personally advocate a minimum price per mile for use of goods vehicles, as some of the prices for movements cannot be completed without cutting legal corners, but that's never gonna happen until companies get done for manslaughter for being complicit.
Back in the day the Eire mushroom men were those with the fastest v8 trucks, low weight and a perishable product needed in the markets meant they pushed the limits.
There are still a few rogues around, but generally compliance is a lot better than it was. I would however personally advocate a minimum price per mile for use of goods vehicles, as some of the prices for movements cannot be completed without cutting legal corners, but that's never gonna happen until companies get done for manslaughter for being complicit.
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