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Road accidents kill nearly 1.2 million people each year worldwide, two-thirds of whom live in developing countries. Traffic crashes may indeed become the third leading cause of death in developing countries by the year ...

Economists have long been concerned with the externalities generated by automobiles, such as traffic congestion and air pollution. Since many of these externalities are closely bound up with the number of miles being ...

It is a tenet of urban planning that transportation networks help shape the spatial configuration of cities. In the case of heavy rail systems, a common belief is that building a subway system will promote employment and ...