+1snorri said:I can't agree. Commuting cyclists are on the same route every day at the same times, they know the locations of hazards and are aware of potential risks, they know how long their journey times will take so adjust their journey start times accordingly. Utility, touring and leisure cyclists are likely to have little or no local knowledge and be more at risk from poor infrastructure and lack of awareness of alternative routes.
I do think that in most places outside London, commuting cyclists are not so common and drivers get used to the cyclists they see on a regular basis and their driving tends to better - at least that's my experience commuting in Glasgow for the last five years.
I also believe that drivers commuting in the rush hour tend to be much more 'on the ball' - i.e. alert and aware of what's going on round them and so the standard of driving is better than it is say, when the school run gets going.