This Observer's Manual provides basic background information for persons who are assigned to observe traffic conflicts in the field. The manual contains definitions of traffic conflicts which typically occur at intersections as well as step-by-step instructions for conducting the survey.
Experience observers and engineers will find the manual to be a handy reference source and an aid in training new personnel. Persons who have not previously conducted a traffic conflict survey should read this manual carefully as a first step in learning how to accurately observe and record traffic conflicts.
| 1. Report No. FHWA–IP–88–027 |
2. Government Accession No. |
3. Recipient's Catalog No. |
| 4. Title and Subtitle
Traffic Conflict Techniques for Safety and Operations Observer's Manual
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5. Report Date January 1989 |
| 6. Performing Organization Code |
| 7. Author(s) M. R. Parker, Jr. and C. V. Zegeer |
8. Performing Organization Report No. |
9. Performing Organization Name and Address
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Martin R. Parker and Associates, Inc.
38549 Laurenwood Drive
Wayne, Michigan 48184-1073
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10. Work Unit No. (TRAIS) NCP 3A9C0093 |
| 11. Contract or Grant No. DTFH61–86–C–00123 |
| 12. Sponsoring Agency Name and Address
Office of Implementation (HRT-20)
Federal Highway Administration
6300 Georgetown Pike, T-304
McLean, Virginia 22101
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13. Type of Report and Period Covered
Test Report
October 1986 – June 1988
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| 14. Sponsoring Agency Code |
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15. Supplementary Notes
Contracting Officer's Technical Representative (COTR) - Michael S. Griffith, HSR-20 Clarence W. Mosher, King K. Mak, and TARAS Inc. were subcontractors.
King K. Mak and John Painter of TARAS Inc. were members of the Expert Panel.
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| 16. Abstract
This manual provides basic background information and step-by-step procedures for conducting traffic conflict surveys at signalized and unsignalized
intersections. The manual was prepared as a training aid and reference source for persons who are assigned the responsibility of conducting traffic
conflict observations at intersections.
Based on previous research and experiences, the survey techniques described in this manual provide a standard, cost-effective method for accurately
observing and recording traffic conflicts. The manual contains definitions with illustrations and examples of conflict types, and instructions for
conducting the field activities, including the time schedules, forms, and other details.
The results of traffic conflict observations are used to diagnose safety and operational problems and to evaluate the effectiveness of treatments. Observer
training techniques, as well as procedures for analyzing and interpreting the results of conflict surveys, are presented in the engineer's guide
(FHWA-IP-88-026).
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| 17. Key Words
Traffic conflicts, Accidents, Intersections, Manual observations, Accident surrogates, Training, Evasive maneuvers, Pedestrians
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18. Distribution Statement
No restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA 22161.
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| 19. Security Classification (of this report) Unclassified |
20. Security Classification (of this page) Unclassified |
21. No. of Pages 40 |
22. Price |
