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CAPACITY FOR RIGHT TURN ON RED.
| 题名： | CAPACITY FOR RIGHT TURN ON RED. |
| 作者： | Virkler-MR; Maddela-RR |
| 关键词： | RIGHT-TURN-ON-RED; SIGNALIZED-INTERSECTIONS; PERFORMANCE-; ESTIMATING-; RIGHT-TURN-ON-RED-VOLUME; LEVEL-OF-SERVICE; HIGHWAY-CAPACITY-MANUAL; EQUATIONS-; RIGHT-TURN-ON-RED-CAPACITY |
| 摘要： | Right turn on red (RTOR) can have a significant effect on intersection operation, but RTOR volume data are seldom collected and are not available for solving intersection design problems. Two techniques have been suggested for analyzing RTOR in the absence of field data. The first is to assume that during a protected left-turn phase, the RTOR movement that is "shadowed" by the protected left turn can have a volume equal to the per-lane volume of the shadowing left turn. The second technique suggests that the movement of an RTOR vehicle is analogous to the movement of a right-turning vehicle at a stop sign-controlled, unsignalized intersection. Extra capacity is present for an RTOR vehicle to move through the unsaturated green portions of movements that currently have a green indication. These two approaches are examined with data from 40 intersections to determine ways to provide a more realistic estimate of intersection operations when significant RTOR volumes may occur. Both approaches yield significant changes in reported intersection operation. For instance, shadowing improved the reported level of service for almost a third of the exclusive right-turn lanes. The stop sign analogy drastically reduced the number of right-turn lanes reported as over capacity. Neither approach is modeled correctly by the Highway Capacity Manual delay equation used for estimating level of service, but modeling of RTOR with the stop sign analogy could lead to a more realistic description of intersection performance and a more efficient use of green time as well as eliminate the construction of unneeded lanes. |
| 总页数： | Transportation Research Record. 1995. (1484) pp66-72 (7 Fig., 1 Tab., 6 Ref.) |
| 报告类型： | 科技报告 |
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- DELAY MODEL FOR RIGHT-TURN LANES AT SIGNALIZED INTERSECTIONS WITH UNIFORM ARRIVALS AND RIGHT TURNS ON RED.
- Innovative Applications of the Highway Capacity Manual, 2010. Papers for the 93rd Annual Meeting of the Transportation Research Board. Held in Washington, DC on January 13, 2014.
- GAP ACCEPTANCE CAPACITY FOR RIGHT TURNS AT SIGNALIZED INTERSECTIONS.
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