It’s a funny old world. Our attitudes to risk are stunningly inconsistent. In medicine if a practitioner were to suggest that a new drug just be tried out, without any testing and ‘we’ll just see what happens’, not unreasonably one would expect them to be struck off.
And yet, and yet. Develop an innovation such as a mobile phone and people can use it while driving until the evidence stacks up that the practice is lethal. No prior testing needed. By which time significant numbers of drivers have convinced themselves that mobile use may be dangerous for other drivers but not for them.
So what of Sat Navs. They have a display and people look at them and while they are looking at them, they can’t be looking out for cyclists. It is slightly reassuring to know that there is some post-hoc research going on, but the absence of a requirement to present research evidence in advance speaks volumes about how car culture is pervasive.