One thing to consider is that it takes a very long time for the 'cars first' mentality to change. Both in drivers and in planning. Ideally, people who drive a c

One thing to consider is that it takes a very long time for the 'cars first' mentality to change. Both in drivers and in planning. Ideally, people who drive a car should also cycle, to know what to expect from bikes. Same for people who plan new roads. With respect to roundabouts, I'm not sure there is a way to do it right.