Call for safety review after another lorry overturns on roundabout near Mount Pleasant

“The overturning force is a function of the centripetal acceleration needed to navigate the roundabout's specific radius at a particular speed. A loaded lorry will have a higher centre of gravity than an unladen one so the force needed will be less. But that's beside the point. The speed is likely to be less than the limit so "safety" cameras will not operate. Added to that, it's a roundabout so you would need three or four of them. Even CCTV on the roundabout would only show a lorry overturning as a result of circulating at too high a speed when it happened and that would prove that the speed was too high and we already knew that.
You could try a 20 mph limit but that would apply to all traffic and would be widely ignored but you'd make a mint from the fines.
Another possibility is to re-build the roundabout with a greater radius thus reducing the centripetal acceleration at a given speed. This would be very expensive. An alternative would be to add a mandatory lorries-only outer lane. This would have a similar, though lesser, effect and could have a separate, 20 mph, speed limit. There would be problems enforcing it and also problems with faster traffic crossing the 20 mph lane on exits.
I'm not familiar with this roundabout. Does it have decreasing-interval speed hatching across the carriageway? If not, why not try that. The psychological effect is to make the driver think he is speeding up while at a constant velocity so he brakes even more than usual for the hazard.
Failing that, the drivers could always slow down because they recognise the problem.”

“Seeing as they put speed camera's in "known accident black spot's", why not put one here?
It probably won't generate much income but it may prevent a repeat of this event and would go some way to dispel the myth that these camera's are just income generators like the one on Spring Bank west where I have never heard of an accident taking place, ever.”

“Place speed bumps 300 metres on each approach road, that will tame them.”

“Ok lets implement this safety measure ..... Slow the fook down !!”

“lorry drivers are under that much presure from bosses to hurry, to meet targets they speed and that is the problem, speed is the cause of lorrys overturning nothing else iwas a lorry driver for 35 years with no accidents i have drove roud this rounabout 100s of times fully loaded at the right speed no problems it makes me laugh when people blame the roundabouts.”

“City councillor Adam Williams...said..."The problem seems to be lorry drivers going too fast....".

Why then is a safety review required?

If HGV drivers need signage to tell them that they need to slow down when approaching a roundabout, perhaps they should think about doing something else for a living. Mind you, many of them don't stop at roundabouts despite not having priority, presumably as their vehicles' momentum would make it difficult to stop.”

“I was under the impression, perhaps naively, that HGV drivers had to be highly trained and qualified before being granted a full licence. The behaviour of loads is surely part of their training. Why then is it felt necessary to festoon this roundabout with warning signs? Will this eventually apply to all roundabouts in the city?”

“Its because the roundabout is dangerous! I went round it in the wet at a slow steady pace and my car understeered badly and it wouldnt turn and kept going off course until id pretty much slowed down to a holt. It seems to be really slippy, but some people do need to watch their speed on that roundabout as ive seem some people fly round that and lose control in the wet.”