The only thing I think I said was that the police upon been notified that any person involved in an accident is under the influence of drugs, they immediately, begin to treat that person as the defendant.
And I think mentioned earlier in the thread that little mitigating circumstances can exist to account for the cyclist not been able to avoid the contact with the motorised vehicle.
I appreciate that the Highways Code, that it is an offence to be charge of any means of transport whilst under the influence of drink or drugs. However, sitting upon a pedal cycle and riding home, is different from sitting upon a motorcycle or behind the steering wheel of a car and doing the same. I also appreciate what you are saying but the fact that this is a commercial road users is not considered a mitigating fact on the cyclists behalf (what I am suggesting is that he is not merely traveling from A to B, he is doing so for payment and wishing to travel back to A to get another journey to B).
As with the two cyclists death on the A30 or numerous deaths in London, were trucks are involved, not only a contact with a truck against cyclist have only one probable outcome. But limiting these vehicle to a top end speed, maybe by means of unintended consequences, mean these drivers drive them to the max in areas below the speed restrictor limit. I am only making comment here, because I know little about technicalities of the subject to think I can reach a conclusion.