The M40 minibus crash had significant circumstantial evidence of the 'moth' or target fixation issue but a combination of the diver having taken off her glasses (to clean?) and other points led the coroner to prefer the option that she had nodded off (and managed to hit almost the only vehicles on the M40 hard shoulder). In any event guidance on works vehicles in TSM Chapter 8 is to make them more conspicuous rather than making any warning beacon the centre of attention. To many works vehicles look like Christmas trees.solocle wrote: ↑Fri Jun 25, 2021 12:49Almost certainly a case of target fixation, I suspect. Hard shoulders aren't safe for stationary vehicles for that reason, but those hard shoulder collisions are unlikely to be affected by it being a smart motorway, yet it opens up more potential collisions.Bryn666 wrote: ↑Fri Jun 25, 2021 12:19 The multiple motorway fatality involving a bus has already happened.
A driver of a minibus on the M40 struck a stationary maintenance vehicle on the hard shoulder and 13 people died.
https://en.wikipedia.org/wiki/M40_minibus_crash
Smart motorways have problems, but people screeching about how wonderful hard shoulders are have clearly never actually used one.
Going back to the suggestion that smart motorways are much safer than APTR ete, well they would be with all the safety kit (assuming it works and the ROC is awake). The critical aspect is is ALR more or less safe that a similar controlled motorway. There is no direct evidence since there is limited direct correlation between the M25 CM sections and anywhere else. While vehicles stopping in what is lanes 2 to 4 on an ALR has a equal level or slight increase in safety, as so does any vehicle which can limp to an EA, traffic which could get to the hard shoulder on a controlled motorway, but no further then there is a significant increase in risk for ALR. While the functional requirements of M42 ATM caused issues with the effectiveness of the design, the HSR operational requirements were set on mitigating the risk to this last group.