Many Americans spend frustrating hours each year stuck in congested traffic, a situation that costs the country billions of dollars annually and influences people's decisions about where to live and work. As traffic has risen dramatically over the past 3 decades with population and economic growth, congestion now extends to more times of the day, more roads, and more cities and towns—thus affecting more people than ever before. Estimates of the cost of congestion vary; according to the Department of Transportation (DOT), congestion costs America an estimated $200 billion each year in lost travel time and fuel, and drivers in metropolitan areas spent more than one-quarter of their total travel time in congested conditions. This book examines current issues, impacts and project reviews relating to traffic congestion and road pricing.