M5 Bristol tipper truck 'incident'
Discussion
https://www.itv.com/news/westcountry/2023-03-02/tr...
I am struggling to understand how this can have happened. A tipper truck has either driven along the motorway with its bed raised or the bed has risen whilst the vehicle was in motion.
I believe that the beds are still hydraulically raised but controlled electronically. If this is the case, are there not warnings or safeguards in place to prevent the truck being driven over say 10mph?
I am struggling to understand how this can have happened. A tipper truck has either driven along the motorway with its bed raised or the bed has risen whilst the vehicle was in motion.
I believe that the beds are still hydraulically raised but controlled electronically. If this is the case, are there not warnings or safeguards in place to prevent the truck being driven over say 10mph?
Edited by 530dTPhil on Friday 3rd March 16:58
Its possible to drive along with the PTO engaged, a variety of ways in which the up/down levers are operated so anyones guess how this one happened, someone drives merrily along not looking in the mirror.
This had less chance of happening back in the bad old days, mostly the PTO was driven into engagement by air pressure, on most sensible installations releasing the air park brake would automatically throw the PTO out. It wasn't expected that some fool would drive along raising the body without noticing it, the fail safe was to protect the PTO from being ruined by being engaged whilst driven at speed which most were never designed to do.
A switched on driver should realise the PTO is still engaged, gearchanges are baulked and awkward mostly even on autos, many automated manual boxes won't go above a certain gear with the PTO still engaged.
This had less chance of happening back in the bad old days, mostly the PTO was driven into engagement by air pressure, on most sensible installations releasing the air park brake would automatically throw the PTO out. It wasn't expected that some fool would drive along raising the body without noticing it, the fail safe was to protect the PTO from being ruined by being engaged whilst driven at speed which most were never designed to do.
A switched on driver should realise the PTO is still engaged, gearchanges are baulked and awkward mostly even on autos, many automated manual boxes won't go above a certain gear with the PTO still engaged.
Same thing in 2007 up in Scotland.
http://news.bbc.co.uk/1/hi/scotland/tayside_and_ce...
How the hell you don't notice the box being up in the air when driving along,I have no idea.A single glance in the mirrors would have given the game away.
http://news.bbc.co.uk/1/hi/scotland/tayside_and_ce...
How the hell you don't notice the box being up in the air when driving along,I have no idea.A single glance in the mirrors would have given the game away.
One in Scotland happened when ptosis was still engaged and once he came out the tip. The vibrations caused the lever to open and revs pocked box up quick while driver unaware.
I suspect similar on m5 tho he should have heard the whine of the pto while driving in gear
Tippers I drove all had lights and buzzer.
Old style pto levers were more safer as when you lowered the body it knocked the pto off but new ones and big possibility being an automatic was a switch on the dash similar what I have just now on the car transporter. Tho if I select a gear while pto on it throws up big red warning on dash
I suspect similar on m5 tho he should have heard the whine of the pto while driving in gear
Tippers I drove all had lights and buzzer.
Old style pto levers were more safer as when you lowered the body it knocked the pto off but new ones and big possibility being an automatic was a switch on the dash similar what I have just now on the car transporter. Tho if I select a gear while pto on it throws up big red warning on dash
Power Take Off.
Usually a hydraulic pump (or two) driven from one of the gears directly from the gearbox.
edit, course its entirely possible it was a motorway maintenance contractor who tipped in roadworks and never lowered the body before driving off, PTO off or on wouldn't make any difference, most normal tippers the body will come down without the PTO engaged, some other power driven equipment, eg car transporters and skip wagons the hydrualics are two way operation the rams needing to be powered both ways.
Usually a hydraulic pump (or two) driven from one of the gears directly from the gearbox.
edit, course its entirely possible it was a motorway maintenance contractor who tipped in roadworks and never lowered the body before driving off, PTO off or on wouldn't make any difference, most normal tippers the body will come down without the PTO engaged, some other power driven equipment, eg car transporters and skip wagons the hydrualics are two way operation the rams needing to be powered both ways.
Edited by Smint on Friday 3rd March 20:37
General Price said:
How the hell you don't notice the box being up in the air when driving along,I have no idea.A single glance in the mirrors would have given the game away.
"Hmm, why is the truck handling like absolute s
t?....ah well, just plod on". Article says the police think he joined at J17. You'd have a job keeping it upright with the bed raised going round that roundabout it would lean so much. Driver is just utterly brain dead, the sort who would be an absolute liability no matter what job they're in. The saving grace is that he'll likely lose his licence for this so with any luck it'll stop him killing someone.
agent006 said:
"Hmm, why is the truck handling like absolute st?....ah well, just plod on". Article says the police think he joined at J17. You'd have a job keeping it upright with the bed raised going round that roundabout it would lean so much.
Driver is just utterly brain dead, the sort who would be an absolute liability no matter what job they're in. The saving grace is that he'll likely lose his licence for this so with any luck it'll stop him killing someone.
If he’s come from the construction site opposite lovetts or behind Morrisons then he wouldn’t have gone very far around the roundabout and not at any speed to roll it. He wouldn’t have cleared the M5 over bridges if coming from Easter Compton. How no one noticed or stopped him on leaving either of those sites would interesting to know, if he left with the bed up. t?....ah well, just plod on". Article says the police think he joined at J17. You'd have a job keeping it upright with the bed raised going round that roundabout it would lean so much. Driver is just utterly brain dead, the sort who would be an absolute liability no matter what job they're in. The saving grace is that he'll likely lose his licence for this so with any luck it'll stop him killing someone.
The insurance claim from HA for this one going to pretty massive.
agent006 said:
General Price said:
How the hell you don't notice the box being up in the air when driving along,I have no idea.A single glance in the mirrors would have given the game away.
"Hmm, why is the truck handling like absolute st?....ah well, just plod on". Article says the police think he joined at J17. You'd have a job keeping it upright with the bed raised going round that roundabout it would lean so much. Driver is just utterly brain dead, the sort who would be an absolute liability no matter what job they're in. The saving grace is that he'll likely lose his licence for this so with any luck it'll stop him killing someone.
fttm said:
agent006 said:
General Price said:
How the hell you don't notice the box being up in the air when driving along,I have no idea.A single glance in the mirrors would have given the game away.
"Hmm, why is the truck handling like absolute st?....ah well, just plod on". Article says the police think he joined at J17. You'd have a job keeping it upright with the bed raised going round that roundabout it would lean so much. Driver is just utterly brain dead, the sort who would be an absolute liability no matter what job they're in. The saving grace is that he'll likely lose his licence for this so with any luck it'll stop him killing someone.
Interesting to see where the gantry smasher driver actually comes from..
Edited by and31 on Saturday 4th March 00:36
Yeah if I've got the PTO engaged on any of our stuff it won't go over 1500rpm, once had to take a very slow journey home because the switch was broken.
Tipper man wasn't even trying..
https://www.bbc.co.uk/news/uk-england-kent-4235824...
Lorry driver sentenced over M20 bridge collapse crash
Tipper man wasn't even trying..
https://www.bbc.co.uk/news/uk-england-kent-4235824...
Lorry driver sentenced over M20 bridge collapse crash
General Price said:
Same thing in 2007 up in Scotland.
http://news.bbc.co.uk/1/hi/scotland/tayside_and_ce...
How the hell you don't notice the box being up in the air when driving along,I have no idea.A single glance in the mirrors would have given the game away.
I once did similar with a tractor and tipper trailer, taking a car to the scrappies for a friend. Hadn't locked the hydraulics and was driving merrily down a b-road when I took a glance behind to see the trailer about 3 qtrs tipped. Was an extremely anxious little while as I lowered the trailer again and waited to see if the car was still in it or had been dumped in the middle of the road somewhere. Thankfully it had been well strapped on and was still there but a salutary lesson in locking the hydraulics when not required http://news.bbc.co.uk/1/hi/scotland/tayside_and_ce...
How the hell you don't notice the box being up in the air when driving along,I have no idea.A single glance in the mirrors would have given the game away.
Even with an old school manual PTO, you can still only raise the body whilst in neutral. That P cab Scania will have had an electronic PTO switch and you can only drive slowly with it engaged and you still can't raise the body.
The imbecile MUST have driven out of the job, along the road and onto the M5 with the body raised! Even at low speed, when you drive off a paver or away from a tipping area with your body raised (there are circumstances where it is valid) the whole wagon shakes like a stting dog. At road speeds it must have steered like a sinking ship.
The driver is an imbecile and the operator needs calling into a public enquiry. If the TC does not become involved then something is very wrong.
The imbecile MUST have driven out of the job, along the road and onto the M5 with the body raised! Even at low speed, when you drive off a paver or away from a tipping area with your body raised (there are circumstances where it is valid) the whole wagon shakes like a s
tting dog. At road speeds it must have steered like a sinking ship.The driver is an imbecile and the operator needs calling into a public enquiry. If the TC does not become involved then something is very wrong.
agent006 said:
Driver is just utterly brain dead, the sort who would be an absolute liability no matter what job they're in. The saving grace is that he'll likely lose his licence for this so with any luck it'll stop him killing someone.
I've seen some likely candidates. They all come from the same place, which I cannot mention.BillyWhizz888 said:
One in Scotland happened when ptosis was still engaged and once he came out the tip. The vibrations caused the lever to open and revs pocked box up quick while driver unaware.
Chinny reckon.When the PTO is engaged you can still only raise the body in neutral. If it is in gear then the body can't be raised.
I’ve seen someone wack a railway bridge after tearing off with the body half up so they could clean their tailboard off.
My previous comment about the driver not being able to feel the body in the air is wrong-an 8 wheel tipper it certainly would be wobbling around-I drive an 8 wheel grab, they have a substantial subframe, and body and crane in the air does not feel very different at all at low speeds.
My previous comment about the driver not being able to feel the body in the air is wrong-an 8 wheel tipper it certainly would be wobbling around-I drive an 8 wheel grab, they have a substantial subframe, and body and crane in the air does not feel very different at all at low speeds.
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