Arrival-Based Uniform Delay Model for Exclusive Protected-Permitted Left-Turn Lane at Signalized Intersections

Abstract

Protected-permitted left-turn (PPLT) control strategies at signalized intersections are used to improve operational efficiency; however, only limited research has been done in modeling the delay for such phasing. The development and validation of uniform delay models for exclusive left-turn lanes with PPLT phases are presented. The proposed models are based on the arrival-based delay method, which directly considers the effects of platoon arrival rate and platoon duration in model development. Two arrival flow rates (one for platoon and one for nonplatoon) and two saturation flow rates (one for protected phase and one for permitted interval) were used to develop the delay models for PPLT. Results of a comparison of the control delays from the proposed models and the Highway Capacity Manual models with simulation results from CorSim indicated that the proposed models estimate the control delay more accurately.

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References

Highway Capacity Manual. TRB, National Research Council, Washington, D.C., 2000.

Benekohal

R. F.

, and Wang

M.-H.

Uniform Delay Model for Protected-Permitted Left Turn Lanes at Signalized Intersections. In Proc., 5th International Symposium on Highway Capacity and Quality of Service, Vol. 2, Yokohama, Japan, 2006.

Rouphail

N. M.

, Courage

K. G.

, and Strong

D. W.

New Calculation Method for Existing and Extended Highway Capacity Manual Delay Estimation Procedures. Presented at 85th Annual Meeting of the Transportation Research Board, Washington, D.C., 2006.

Hurdle

V. F.

, and Lord

Analysis of Two Left-Turn Equations from the “Highway Capacity Manual.” In Transportation Research Record 1646, TRB, National Research Council, Washington, D.C., 1998, pp. 71–78.

Roess

R. P.

, Ulerio

J. M.

, and Payannoulis

V. N.

Modeling the Left-Turn Adjustment Factor for Permitted Left Turns Made from Shared Lane Groups. In Transportation Research Record 1287, TRB, National Research Council, Washington, D.C., 1990, pp. 138–150.

Prassas

E. S.

, and Roess

R. P.

Left-Turn Adjustment for Permitted Turns from Shared Lane Groups: Another Look. In Transportation Research Record 1398, TRB, National Research Council, Washington, D.C., 1993, pp. 75–81.

Lasod

, and Qureshi

M. A.

Comparison of Queue Clearance Models for Multilane Approach Opposing Permissive Left. Presented at 84th Annual Meeting of the Transportation Research Board, Washington, D.C., 2005.

Benekohal

R. F.

, and El-Zohairy

Y. M.

Multi-Regime Arrival Rate Uniform Delay Model for Signalized Intersections. Transportation Research Part A, Vol. 35, No. 7, 2001, pp. 625–667.

Benekohal

R. F.

, and El-Zohairy

Y. M.

Progression Adjustment Factors for Uniform Delay at Signalized Intersections. In Transportation Research Record: Journal of the Transportation Research Board, No. 1678, TRB, National Research Council, Washington, D.C., 1999, pp. 32–41.

10.

Wang

M.-H.

, and Benekohal

R. F.

Blocked Time of Permitted Left-Turn Lane Group with Two Opposing Lanes for Two Arrival Types. In Transportation Research Record: Journal of the Transportation Research Board, No. 1988, Transportation Research Board of the National Academies, Washington, D.C., 2006, pp. 138–146.

11.

TSIS 5.1 User's Guide. Systems Division, ITT Industries, Inc., Colorado Springs, Colo., 2003.

12.

TrafVU File Description Document, Version 5.1. Systems Division, ITT Industries, Inc., Colorado Springs, Colo., 2003.