Big Wheels or Little Wheels. Which ones aggravate washboarding more? The Connection, p. 3, Vol. 8, winter, 1995
Effects of Vehicle Type and Tire Pressure on Dry-weather Road Maintenance, Greefield, Ashmore, 6th Intl. conf. on low-vol. road, pp. 291-301
PUMA, 1998. PUMA Newsletter, Winter 1998. Early Travel in the Magnolia Area. Oral history provided by Edith Scates.
Various reports from NHTSA: Speeding; Young Drivers; Crash, Injury and Fatality Rates; Rural and Urban Crashes; Traffic Crashes as Leading Cause of Death; Vehicle Weights and Crash/Injury Rates; Estimating Lives Saved by Restraint; Age-Sex Crash data;
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