Comparison of saturation flow rates at signalized intersections
The intersection, being the focal point of conflicts and congestion in the roadway network, is a critical area in the efficient use of the urban street system. As a result, the capacity of the intersection, particularly the signalized intersection, has been the subject of much research in recent years. Procedures for estimating signalized intersection capacity are typically based on the use of an ideal, maximum traffic flow rate (saturation flow) that is adjusted to reflect site-specific conditions that may not be ideal. Regardless of the specific procedure used in signalized intersection capacity analyses, saturates flow is used as the base flow rate. Various capacity influencing factors are then used to modify this base flow value to reflect prevailing conditions. This article presents a brief review of studied conducted to estimate saturation flows at signalized intersections. Given the sensitivity of signalized intersection capacity analysis procedures to saturation flow values, the information presented here should be of interest to the practitioner, as well as the theorist.
- Research Organization:
- Texas A and M Univ., College Station, TX (USA). Texas Transportation Inst.
- OSTI ID:
- 5861449
- Journal Information:
- J. Transp. Eng.; (United States), Vol. 58:11
- Country of Publication:
- United States
- Language:
- English
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