1. 1987 Motor carrier safety survey;Beilock;Alexandria, VA: Regular Common Carrier Conference,1988
2. 1986 Motor carrier safety survey;Beilock;Alexandria, VA: Regular Common Carrier Conference,1987
3. Heavy truck safety study;Clarke,1987
4. Truck drivers involvement in traffic accidents as related to their shiftworks and professional features;Hamelin,1987
5. A study of the relationships among fatigue, hours of service, and safety operations of truck and bus drivers;Harris,1972