A congestion index that is keyed to the differences in actual versus desired travel times for various types of roadways is described. The suggested index provides a continuous scale for assessing the amount of congestion incurred. It encompasses a wide range of values and is easy to understand and use.
Get full access to this article
View all access options for this article.
References
1.
Quantifying Congestion—Final Report (Draft) and User's Guide (Draft). National Cooperative Highway Research Program Project 7-13. TRB, National Research Council, Washington, D.C., 1995.
2.
Special Report 209: Highway Capacity Manual.Transportation Research Board, National Research Council, Washington, D.C., 1985.
3.
Skycomp, Inc. Traffic Quality on the Metropolitan Washington Area Limited-Access Highway System.Metropolitan Washington Council of Governments, Washington, D.C., 1993.
4.
Skycomp, Inc. Traffic Quality on Highways in Nassau and Suffolk Counties, New York. Draft Report. New York State Department of Transportation, 1994.
5.
LindleyJ. A.Quantification of Urban Freeway Congestion and Analysis of Remedial Measures. Report FHWA/RD-87/052. FHWA, U.S. Department of Transportation, 1986.
6.
SchrankD. L., TurnerS. M., and LomaxT. J., Trends in Urban Roadway Congestion—1982 to 1991: Vol. 1: Annual Report. Research Report 1131-6. Texas Transportation Institute, Texas Department of Transportation, Sept. 1994.
7.
CottrellW. D.Measurement of the Extent and Duration of Freeway Congestion in Urbanized Areas. Compendium of Technical Papers— ITE 61st Annual Meeting, Institute of Transportation Engineers, 1991.
8.
TurnerS. M.An Examination of the Indicators of Congestion Level. In Transportation Research Record 1360, TRB, National Research Council, Washington, D.C., 1993.
9.
Public Satisfaction with Travel to Work. Information Report No. 49. National Capital Region Transportation Planning Board, 1972.
10.
Long Range Transportation Plan Re-Evaluation: Summary of Findings. National Capital Region Transportation Planning Board. Metropolitan Washington Council of Governments, 1982.
11.
Long Range Transportation Plan Re-Evaluation: Technical Supplement.National Capital Region Transportation Planning Board, Metropolitan Washington Council of Governments, 1982.
12.
Special Report 209: Highway Capacity Manual, 3rd ed. TRB, National Research Council, Washington, D.C., 1994.
