I'd argue that we are way beyond this being a problem. In many cases the highways were designed with a much lower traffic count in mind. When the population w

I'd argue that we are way beyond this being a problem. In many cases the highways were designed with a much lower traffic count in mind. When the population was half what it is now. The problem to me it seems is that highway planners did not design for continued growth. Or when they did, growth outstripped capacity. Additionally, single car drivers is the absolute worst case - why not design for that? Part of the problem with traffic is people go where the jobs are. There is a perverse incentive to house jobs where people aren't. This causes people to have to move a great distance everyday just to get to work. What makes this all really laughable is that many people drive a great distance just to sit infront of a computer where most of their work is done on some sort of computer network or over the telephone. I think a nationwide telecommuting first policy would do more to reduce traffic than any of the other alternatives available.