Uncontrolled T Intersections: Who Should Yield?
Publication: Journal of Transportation Engineering
Volume 113, Issue 3
Abstract
A questionnaire is distributed to licensed drivers in Iowa, asking questions regarding assignment of right‐of‐way at uncontrolled T intersections. A majority of respondents gives incorrect answers. Age is determined to be related to correctness of response, with older drivers having a greater proportion of correct responses than younger drivers. Traffic and accident data are collected for randomly selected uncontrolled T and four‐legged intersections. The accident rates calculated for these intersections are 0.251 and 0.733 accidents per million entering vehicles, respectively. The difference in the rates is found to be significant at the 0.005 level. It is concluded that a difference exists between drivers' perception and legal right‐of‐way assignment at uncontrolled T intersections. A recommendation is made to change the law in Iowa to give the right‐of‐way at uncontrolled T intersections to vehicles on the nonterminating roadway, and for research on nationwide uniformity in the laws governing T intersection right‐of‐way and possible revision of the Uniform Vehicle Code.
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References
1.
Automotive Safety Foundation, The, “Intersections,” Chapter VII, Traffic Control & Roadway Elements—Their Relationship to Highway Safety, Washington, D.C., 1963.
2.
Iowa Code, Sec. 321.350, 1975.
3.
Iowa Code, Sec. 321.1, 1975.
4.
Iowa Code, Sec. 321.319, 1975.
5.
Lum, H. S., and Parker, M. R., Jr., “Intersection Control and Accident Experience in Rural Michigan,” ITE Journal 53, May, 1983, pp. 27–29.
6.
Morin, D. A., “Application of Statistical Concepts to Accident Data,” Highway Research Record 188, 1967, pp. 72–79.
7.
National Advisory Committee on Uniform Traffic Control Devices, Manual on Uniform Traffic Control Devices for Streets and Highways, U.S. Department of Transportation, Federal Highway Administration, Washington, D.C., 1978.
8.
National Committee on Uniform Traffic Laws and Ordinances, Uniform Vehicle Code, Sec. 11–401(a), Rev. 1968.
9.
Rosenbaum, M. J., “A Review of Research Related to the Safety of STOP Versus YIELD Sign Traffic Control,” Public Roads 47, Dec., 1983, pp. 77–83.
Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 113 • Issue 3 • March 1987
Pages: 299 - 314
Copyright
Copyright © 1987 ASCE.
History
Published online: Mar 1, 1987
Published in print: Mar 1987
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