As our roads become more congested, a common criticism is that instead of widening roads, we should be increasing public transportation services. This seems to be a popular solution to some who are looking for ways to get those "other guys" off the road.
Our roads are becoming more congested because the volumes of traffic using the roads often exceed the capacity of those roads. Why not just get the traffic moving much faster so that you get that many more vehicles through an area in an hour?