Capacity computations of right-turn-on-red using the Highway Capacity Manual

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · ITE (Institute of Transportation Engineers) Journal; (USA)

OSTI ID:6716441

Luh, J Z ^[1]; Lu, Y J ^[2]

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1. Langan Engineering Associates, NJ (US)
2. Concordia Univ., Loyola Campus, Montreal, PQ (Canada)

Right-turn-on-red (RTOR) is a traffic control strategy at signalized intersections that allows vehicles to turn right during red phases provided they do not impede the vehicles and pedestrians in green phases. RTOR is primarily a delay and energy conservation measure. Several studies that examined the impact of RTOR on vehicular delays have shown the potential of reducing fuel consumption by about 5 percent on urban streets. The reduction of delay and fuel consumption is related to extra capacity because RTOR allows vehicles to pass through an intersection in red phases. The extra capacity can be significant if an exclusive right-turn lane is provided. The 1985 {ital Highway Capacity Manual} (HCM) provides a powerful technique for evaluating how well an intersection will operate. This technique, however, is less successful in dealing with intersections where RTOR movement is permitted because it requires the analyst to supply RTOR volumes. This situation has led to a need for a formula to compute RTOR capacity. This paper proposes a method to calculate this capacity.

• OSTI ID: 6716441
• Journal Information: ITE (Institute of Transportation Engineers) Journal; (USA), Journal Name: ITE (Institute of Transportation Engineers) Journal; (USA) Vol. 60:4; ISSN 0162-8178; ISSN ITEJD
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320203* -- Energy Conservation
Consumption
& Utilization-- Transportation-- Land & Roadway
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTER CALCULATIONS
CONTROL
ENERGY CONSERVATION
ENERGY CONSUMPTION
FUEL CONSUMPTION
LAND TRANSPORT
PLANNING
TRAFFIC CONTROL
TRANSPORT
VEHICLES