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1 - 3 of 3 resultsSearch results for "observational studies"
Trends in Single Occupant Vehicle and Vehicle Miles of Travel Growth in the United States: Final Report (1998)
Transportation Research Board
Managing Speed: Review of Current Practices for Setting and Enforcing Speed Limits -- Special Report 254 (1998)
Transportation Research Board
Transportation and Infrastructure
Future Directions for the National Science Foundation's Arctic Natural Sciences Program (1998)
National Research Council; Division on Earth and Life Studies; Polar Research Board; Commission on Geosciences, Environment and Resources
Earth Sciences | Transportation and Infrastructure