Someone told me recently it would be possible to tip over a double decked trailer by striking/mounting a kerb. Would this really be possible? I ask as I’ve started driving them including 16’3" trailers and as a newish driver I want to know how much fear of kerbs I need to have! Thanks.
It depends on how high the kerb, and how top heavy the load, so yes it can and does happen…if a trailer is loaded wrongly with weight a lot heavier on top, i must say that i havnt heard of a double decker going over, its mainly containers, or high sided tippers, and many go over on roundabouts, and a lot depends on speed.
As Truckyboy says, top heavy trailer, high kerb. Then there’s shifting high load if it isn’t secured properly. Would only happen if you really hit it at speed I would’ve thought.
Best not to do it really as it doesn’t do your tyre walls any good either.
asGas…maybe that link should have been put into a seperate heading…as i dont think running without an abs/ebs line will turn a trailer over…which is what the op was asking advice on. 
truckyboy:
asGas…maybe that link should have been put into a seperate heading…as i dont think running without an abs/ebs line will turn a trailer over…which is what the op was asking advice on.
Even though the article says “it can cause a rollover” 
What the driver may not understand is that they are more likely to experience jack-knifing, aquaplaning, brake lock, rollover,
I think it’s a bit ‘over dramatic’ myself but still the relevance is undeniable.
Given that the red line controls the stability system and the suspension, I think running with it disconnected might have a bit of an influence.
I’m not saying a disconnected red line would cause a roll-over, but it certainly makes one much more likely…esp (pun) with a top-heavy double-deck.
I wonder if this guy had his red line plugged in
wanderingstar:
Someone told me recently it would be possible to tip over a double decked trailer by striking/mounting a kerb. Would this really be possible? I ask as I’ve started driving them including 16’3" trailers and as a newish driver I want to know how much fear of kerbs I need to have! Thanks.
Well if you mount a kerb on your test you’ve failed so that might hint at something but excess speed, sudden change of direction, accelerating through a bend and poor loading are things to be aware of.
GasGas:
Given that the red line controls the stability system and the suspension, I think running with it disconnected might have a bit of an influence.I’m not saying a disconnected red line would cause a roll-over, but it certainly makes one much more likely…esp (pun) with a top-heavy double-deck.
I wonder if this guy had his red line plugged in
To roll it over, with the red line disconnected, you wouldn’t half have to get out and push on the side really hard.
Warning, the following post contains half remembered facts and ■■■ packet maths.
I’m pretty sure that double decker busses can lean up to 30 degrees before tipping over. Given the height of them, you’d need a kerb about 2 foot high to get to that angle.
Of course, speed and weight distribution will alter that dramatically.
I like the post about pushing really hard if the red line is disconnected [emoji23]
Treat the kerb like a fence or brick wall, that 3 year olds toes don’t do well under a trailer tyre
youtube.com/watch?v=kllMekpmy4g
I reckon if he had a decker on he’d have gone over due to the extra weight up top.
He’d mounted the high kerb.
Own Account Driver:
GasGas:
Given that the red line controls the stability system and the suspension, I think running with it disconnected might have a bit of an influence.I’m not saying a disconnected red line would cause a roll-over, but it certainly makes one much more likely…esp (pun) with a top-heavy double-deck.
I wonder if this guy had his red line plugged in
To roll it over, with the red line disconnected, you wouldn’t half have to get out and push on the side really hard.
[emoji6]
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Own Account Driver:
GasGas:
Given that the red line controls the stability system and the suspension, I think running with it disconnected might have a bit of an influence.I’m not saying a disconnected red line would cause a roll-over, but it certainly makes one much more likely…esp (pun) with a top-heavy double-deck.
I wonder if this guy had his red line plugged in
To roll it over, with the red line disconnected, you wouldn’t half have to get out and push on the side really hard.
Missed that… 
Sorry…red lines…I mean faces… all round! 
Captain Caveman 76:
Warning, the following post contains half remembered facts and ■■■ packet maths.I’m pretty sure that double decker busses can lean up to 30 degrees before tipping over. Given the height of them, you’d need a kerb about 2 foot high to get to that angle.
Of course, speed and weight distribution will alter that dramatically.
In a static condition perhaps. London buses weigh nothing up top. Lorries being on the move have the old energy extra. Like you say speed etc.
OP. Yes def kerbs and tall trailers. It’s not a myth. I did a spell on boxes, there were a fair few tip overs on the docks with wagons clipping the kerb. Containers can be loaded with quite a high centre of mass. Doesn’t take a lot with momentum to get them to roll, suspension squashes, tyre sidewalls bend and that’s it.
One thing you watched for on boxes was kerbs 
Putting it on its ribs isn’t the only reason to avoid kerbs,the rims are made of chocolate. This one was left in the yard & the driver denied all knowledge when asked. I also stopped a subby, who was reversing onto a bay one day to tell him his wheel looked like the photo. He also said he hadn’t hit anything…
wanderingstar:
Someone told me recently it would be possible to tip over a double decked trailer by striking/mounting a kerb. Would this really be possible? I ask as I’ve started driving them including 16’3" trailers and as a newish driver I want to know how much fear of kerbs I need to have! Thanks.
You can do it with a standard trailer depending on the load. The one and only accident I had in a lorry involved me clipping the kerb on a roundabout at a low speed in a truck towing a 13’ 10" trailer. Was loaded to the roof with melamine worktops which moved despite being strapped down to hell and the wagon ended up on its side. Tacho disc supported the low speed, a witness who had been following me stated what happened, CCTV footage at work showed me strapping the hell out of the load with both internal straps and ratchet straps.
Captain Caveman 76:
Warning, the following post contains half remembered facts and ■■■ packet maths.I’m pretty sure that double decker busses can lean up to 30 degrees before tipping over. Given the height of them, you’d need a kerb about 2 foot high to get to that angle.
Of course, speed and weight distribution will alter that dramatically.
28 degrees as demonstrated here
Thats a fair old tilt though but imagine the upper deck being full and apply same to a diuble beck trailer.
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Where’s that video of the Downton’s truck going over in a brewery somewhere because the driver dragged the trailer wheels over a kerb?