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Recent changes in the age composition of U.S. drivers implications for the extent, safety, and environmental consequences of personal transportation.
This study examined the changes from 1983 to 2008 in the percentage of persons with a driver-s license as a function of age. The results indicate that, over the past 25 years, there was a substantial decrease in the percentage of young people with a driver-s license, and a substantial increase in...
An analysis of U.S. road fatalities per population changes by age from 1958 to 2008.
Objective: This article presents a time-series analysis of changes in road safety in the United States from a public-health point of view. Method: A 50-year period was examined, from 1958 to 2008. The emphasis was on the changes by decades in fatalities per population across different age groups....
Toward understanding on-road interactions of male and female drivers
Objective: This study examined gender effects in six geometric scenarios of 2-vehicle crashes in which an involved driver could potentially ascertain the gender of the other driver prior to the crash. Method: The actual frequencies of different combinations of the involved male and female drivers...
Unemployment rate and price of gasoline predict the fuel economy of purchased new vehicles
This study examined the relationship between two economic indicators-the unemployment rate and the price of gasoline-and the fuel economy of purchased new vehicles. A regression analysis was performed on U.S. monthly data from October 2007 through February 2011. The main finding is that the fuel...
Benefits of daytime running lights
This study evaluated the effects of daytime running lights (DRLs) on two-vehicle, head-on crashes of passenger vehicles during daylight, dawn, and dusk. Two control dimensions were used: type of crash (the control being single-vehicle crashes) and light condition (the control being darkness). The...
Toward understanding on-road interactions between male and female drivers
This study examined gender effects in six geometric scenarios of two-vehicle crashes in which an involved driver could potentially ascertain the gender of the other driver prior to the crash. The actual frequencies of different combinations of the involved male and female drivers in these crash...
U.S. road fatalities per population changes by age from 1958 to 2008.
This report presents a time-series analysis of changes in road safety in the U.S. from the public-health point of view. A 50-year period is examined, from 1958 to 2008. The emphasis is on the changes by decades in fatalities per population across different age groups. The main findings are as...
A preliminary analysis of traffic crashes by out-of-state drivers
Objective: This study was designed to investigate the relationship between the involvement of out-of-state drivers in fatal crashes and each US state-s fatality rate per distance driven. Method: Two analyses were performed. In the first analysis, we examined the percentages of out-of-state drivers...
Eco-driving strategic, tactical, and operational decisions of the driver that improve vehicle fuel economy.
This report presents information about the effects of decisions that a driver can make to influence on-road fuel economy of light-duty vehicles. These include strategic decisions (vehicle selection and maintenance), tactical decisions (route selection and vehicle load), and operational decisions (...
Differences in geometry of pedestrian crashes in daylight and darkness
Introduction: Previous studies have shown that increased risk in darkness is particularly great for pedestrian crashes, suggesting that attempts to improve headlighting should focus on factors that likely influence those crashes. The current analysis was designed to provide information about how...

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