The purpose of the present study was to investigate the cost and production structure of mass transit systems using both panel and time series data. Accepting cost minimization (subject to a set of constraints that reflect demand, regulatory, and urban setting conditions) as the economic...

A Federal Highway Bill was enacted in 1987 in response to many state governments' increasing concerns that the 55-mph national maximum speed limit was unduly restrictive. The bill permitted states to raise the maximum speed limit to 65 mph on most rural interstate highways, which historically...