00803805

Component

https://doi.org/10.3141/1727-01

http://scholar.google.com...lock&publication_year=2000

A case study that examines the impact of emergency vehicle preemption on closely spaced arterial traffic signals is reported. The study was conducted on State Route (SR) 26, a principal arterial and main thoroughfare that connects Interstate 65 with US-52 on the east side of Lafayette, Indiana. Four coordinated intersections along SR-26 were examined by using seven preemption paths and three different transition algorithms (smooth, add, and dwell). The number of preemption calls in the simulation period varied from one to three for equal simulation periods. The findings generally show that a single preemption call had a minimal effect on the overall travel time and delay through the network. The results also indicate that the smooth transitioning algorithm performed the best with most scenarios and paths for both the arterial and the side streets. When multiple emergency vehicles preempt at closely spaced time intervals, the impact of preemption was more severe. For the network studied, the most severe impact on arterial travel time observed was an increase in the average arterial travel time on the order of 20 to 30 s. The study focused on emergency vehicle preemption, but the general procedures described could also be applied to railroad preemption or transit priority.

This paper appears in Transportation Research Record No. 1727, Advanced Traffic Management Systems and Automated Highway Systems 2000.

English

p. 1-11

2000

Transportation Research Record

0309067340

Figures (7) ; References (10) ; Tables (7)

Algorithms; Arterial highways; Case studies; Emergency vehicles; Impacts; Signalized intersections; Traffic delays; Traffic signal preemption; Travel time

Lafayette (Indiana)

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Dec 5 2001 12:00AM

• ARE MINIMIZATION OF DELAY AND MINIMIZATION OF FREEWAY CONGESTION COMPATIBLE RAMP METERING OBJECTIVES?
• AUTOMATIC VEHICLE IDENTIFICATION TECHNOLOGY-BASED FREEWAY INCIDENT DETECTION
• CALIBRATION OF PLATOON DISPERSION PARAMETERS ON THE BASIS OF LINK TRAVEL TIME STATISTICS
• COMPARISON OF VISSIM AND CORSIM TRAFFIC SIMULATION MODELS ON A CONGESTED NETWORK
• CONTROL STRATEGIES FOR TRANSIT PRIORITY
• DEVELOPMENT AND EVALUATION OF INTELLIGENT BUS PRIORITY CONCEPT
• ENHANCED GENETIC ALGORITHM FOR SIGNAL-TIMING OPTIMIZATION OF OVERSATURATED INTERSECTIONS
• FORMULATION OF REAL-TIME CONTROL POLICY FOR OVERSATURATED ARTERIALS
• FREEWAY TRAFFIC SPEED ESTIMATION WITH SINGLE-LOOP OUTPUTS
• GENETIC ALGORITHMS FOR TRAFFIC SIGNAL CONTROL AND QUEUE MANAGEMENT OF OVERSATURATED TWO-WAY ARTERIALS
• INTEGRATED TRAFFIC-RESPONSIVE URBAN CORRIDOR CONTROL STRATEGY IN GLASGOW, SCOTLAND: APPLICATION AND EVALUATION
• MAXIMUM POSSIBLE WEAVING VOLUME FOR EFFECTIVE OPERATIONS OF RAMP-WEAVE AREAS: ONLINE ESTIMATION
• NEW PROCEDURE FOR DETECTOR DATA SCREENING IN TRAFFIC MANAGEMENT SYSTEMS
• PROGRESSIVE DEPLOYMENT STEPS LEADING TOWARD AN AUTOMATED HIGHWAY SYSTEM
• REMOTE SIMULATION TO EVALUATE REAL-TIME TRAFFIC CONTROL STRATEGIES
• SCOOT REAL-TIME ADAPTIVE CONTROL IN A CORSIM SIMULATION ENVIRONMENT
• SIGNAL COORDINATION AND ARTERIAL CAPACITY IN OVERSATURATED CONDITIONS
• TRAFFIC SIGNAL COORDINATION ACROSS JURISDICTIONAL BOUNDARIES: FIELD EVALUATION OF EFFICIENCY, ENERGY, ENVIRONMENTAL, AND SAFETY IMPACTS