In this paper, we analyze the service provided by the 13 largest U.S. passenger airlines to the 100 most populous U.S. metropolitan areas in 1989. We classify the route systems by their nature and geographic scope using a variety of measures based on route-level data. We then identify individual...

This paper analyzes the influence of highway safety regulation enforcement efforts on motor vehicle fatalities. It estimates a regression model in which such deaths depend on these efforts as well as economic conditions, driver characteristics, government regulations, and locational factors,...

This paper uses seemingly unrelated regression analysis and annual Ohio data for 1975-2000 to estimate a model for six different types of motor vehicle fatalities: car occupants, light truck occupants, large truck occupants, motorcyclists, pedestrians, and pedalcyclists. It finds that while...