The risks associated with congestion pricing and the nature of policy development in a pluralistic society imply that this policy will progress in small steps. Given that congestion pricing represents a substantial change from the current operation of the road system, such small steps are appropriate. If individual projects succeed, they will help convince policy makers and the public of the benefits of congestion pricing. This process will take time, however; thus it may be many more years before congestion pricing would be applied throughout a metropolitan area in this country. Whether congestion pricing will evolve to this level will depend on how it is implemented, how well it works, and how much motorists and voters come to accept it. Only time, experimentation, and careful evaluation will tell.