Modern transportation systems have pervasive and far-reaching effects on society and the environment. Mobility and other benefits of modern transportation arrive with many, serious undesired consequences:deaths and injuries in transport accidents, pollution of air,water and groundwater,noise...

Corporate average fuel economy (CAFE) regulations specify minimum standards for fuel efficiency that vehicle manufacturers must meet independently. We design a system of tradeable fuel economy credits that allows trading across vehicle classes and manufacturers with and without considering...

Stochastic simulation of the direct economic costs of oil dependence in an uncertain future is proposed as a useful metric of oil dependence. The market failure from which these costs arise is imperfect competition in the world oil market, chiefly as a consequence of the use of market power by...

By reducing the fuel costs of travel, motor vehicle efficiency, improvements tend to increase the demand for travel, thereby offsetting some of the energy-saving benefit of the efficiency improvement and creating a "rebound" effect. The key factor is the elasticity of vehicle travel with respect...