Northwestern University, Evanston, Ill. Traffic Institute, & National Safety Council. Traffic Accident Data Project Steering Committee. (1970). Exercises in classifying motor vehicle trafficway accidents: Designed for training in use of Manual on classification of motor vehicle traffic accidents, second revision, American National Standard D16.1-1970. National Safety Council.

Northwestern University, Evanston, Ill. Traffic Institute, and National Safety Council. Traffic Accident Data Project Steering Committee. Exercises in Classifying Motor Vehicle Trafficway Accidents: Designed for Training in Use of Manual on Classification of Motor Vehicle Traffic Accidents, Second Revision, American National Standard D16.1-1970. Chicago, Ill.: National Safety Council, 1970.

Northwestern University, Evanston, Ill. Traffic Institute, and National Safety Council. Traffic Accident Data Project Steering Committee. Exercises in Classifying Motor Vehicle Trafficway Accidents: Designed for Training in Use of Manual on Classification of Motor Vehicle Traffic Accidents, Second Revision, American National Standard D16.1-1970. National Safety Council, 1970.