00795385

Component

http://onlinepubs.trb.org...rculars/ec018/ec018toc.pdf

The discharge characteristics of heterogeneous traffic, with a wide variation in vehicle characteristics, are significantly different from homogeneous traffic. In this paper, the speed at which heterogeneous vehicles move through the intersection area is analyzed in detail for four different motorized vehicle types -- two-wheelers (motorcycles and scooters), three-wheelers (autorickshaws), cars, and buses. Traffic flow data captured on video are digitally analyzed to determine vehicle positions every second for three intersections in two Indian cities, Baroda and New Delhi. A coordinate conversion procedure is applied to obtain roadway coordinates from screen coordinates, and the speed of the vehicles is determined. The analysis shows that for a given intersection, the speed at which vehicles traverse the intersection space (clearing speed) does not vary significantly by vehicle type. It is expected that such detailed studies of discharge characteristics will help determine methods to estimate capacity at signalized intersections for heterogeneous traffic.

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E-C018

English

p. 258-270

2000-6

Transportation Research Circular

Fourth International Symposium on Highway Capacity

Figures (5) ; Photos (2) ; References; Tables (7)

Automobiles; Buses; Estimating; Highway capacity; Motorcycles; Scooters; Signalized intersections; Speed; Three wheeled vehicles

Autorickshaws; Heterogeneous traffic; Traffic discharge characteristics

India

Highways; Operations and Traffic Management; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning

TRIS, TRB

Jul 26 2000 12:00AM

• 2+1-ROADS WITH AND WITHOUT CABLE BARRIERS: SPEED PERFORMANCE
• A FURTHER INVESTIGATION ON CRITICAL GAP AND FOLLOW-UP TIME
• A PROBABILISTIC APPROACH TO DEFINING FREEWAY CAPACITY AND BREAKDOWN
• ADVANCING THE FRONTIER OF SIMULATION AS A CAPACITY AND QUALITY OF SERVICE ANALYSIS TOOL
• AN EMPIRICAL STUDY ON THE CAPACITY OF BOTTLENECKS ON THE BASIC SUBURBAN EXPRESSWAY SECTIONS IN JAPAN
• ANALYSIS OF ALTERNATIVE SERVICE MEASURES FOR FREEWAY FACILITIES
• ANALYSIS OF THE INTERRELATIONSHIP AMONG TRAFFIC FLOW CONDITIONS, DRIVING BEHAVIOR, AND DEGREE OF DRIVER'S SATISFACTION ON RURAL MOTORWAYS
• CAPACITY AND PERFORMANCE OF ROUNDABOUTS: A SUMMARY OF RECOMMENDATIONS IN THE FHWA ROUNDABOUT GUIDE
• CAPACITY AT ALL-WAY STOP-CONTROLLED AND FIRST-IN-FIRST-OUT INTERSECTIONS
• CAPACITY OF UNSIGNALIZED URBAN JUNCTIONS
• COMPARISON OF FREEWAY SIMULATION WITH INTEGRATION, KRONOS, AND KWAVES
• COMPARISON OF THE HCM AND SINGAPORE MODELS OF ARTERIAL CAPACITY
• DEVELOPMENT OF CAPACITY ESTIMATION METHOD FROM STATISTICAL DISTRIBUTION OF OBSERVED TRAFFIC FLOW
• DEVELOPMENT OF CAPACITY GUIDELINES FOR ROAD LINKS AND INTERSECTIONS FOR HENAN AND HEBEI PROVINCES, PRC
• EFFECT OF DARKNESS ON THE CAPACITY OF LONG-TERM FREEWAY RECONSTRUCTION ZONES
• EFFECT OF ENVIRONMENTAL FACTORS ON FREE-FLOW SPEED
• EFFECT OF RADIUS OF CURVATURE FOR RIGHT TURNING VEHICLES ON THROUGH TRAFFIC DELAY
• EFFECTS OF DRIVER POPULATION ON THE TRAFFIC OPERATIONAL PERFORMANCE OF SIGNALIZED INTERSECTIONS
• EFFECTS OF OD FLOWS ON ROUNDABOUT ENTRY CAPACITY
• EFFECTS OF TRAFFIC CONDITION (V/C) ON SAFETY AT FREEWAY FACILITY SECTIONS
• ESTIMATION OF CRITICAL GAPS AND FOLLOW-UP TIMES AT RURAL UNSIGNALIZED INTERSECTIONS IN GERMANY
• EVALUATION OF MACRO- AND MESOSCOPIC MODELS FOR CONGESTION IMPACT ANALYSIS
• FOURTH INTERNATIONAL SYMPOSIUM ON HIGHWAY CAPACITY, PROCEEDINGS, JUNE 27-JULY 1, 2000, MAUI, HAWAII
• FRAMEWORK TO CONSIDER THE EFFECT OF UNCERTAINTY IN FORECASTING THE LEVEL OF SERVICE OF SIGNALIZED AND UNSIGNALIZED INTERSECTIONS
• HISTORICAL OVERVIEW OF THE COMMITTEE ON HIGHWAY CAPACITY AND QUALITY OF SERVICE
• INTEGRATION OF SAFETY AND THE "HIGHWAY CAPACITY MANUAL"
• LEVEL OF SERVICE CLASSIFICATION FOR URBAN HETEROGENEOUS TRAFFIC: A CASE STUDY OF KANPUR METROPOLIS
• LEVEL OF SERVICE ON FINNISH TWO-LANE HIGHWAYS
• LEVEL-OF-SERVICE MEASURE OF ROAD TRAFFIC BASED ON THE DRIVER'S PERCEPTION
• MACRO SPEED-FLOW MODEL FOR ON- AND OFF-RAMPS ON MULTILANE ROADS
• MULTIMODAL ARTERIAL LEVEL OF SERVICE
• NEW TRANSIT CAPACITY AND QUALITY OF SERVICE MANUAL
• OPERATIONAL CHARACTERISTICS OF WEAVING SECTIONS IN CHINA
• PASSENGER CAR UNITS FOR HETEROGENEOUS TRAFFIC USING A MODIFIED DENSITY METHOD
• PROBABILISTIC MODELS FOR PEDESTRIAN CAPACITY AND DELAY AT ROUNDABOUTS
• TOWARDS AN AREAWIDE SERVICE MEASURE
• TRAFFIC FLOW ANALYSIS BEYOND TRADITIONAL METHODS
• UNBALANCED TRAFFIC VOLUMES AT ROUNDABOUTS
• UNCERTAINTY IN SATURATION FLOW PREDICTIONS
• USE OF SIMULATION TO ANALYSIS OF IMPEDANCE IMPACT AT UNSIGNALIZED INTERSECTIONS
• USER PERCEPTION OF LEVEL OF SERVICE AT SIGNALIZED INTERSECTIONS: METHODOLOGICAL ISSUES
• VEHICLE CLASSIFICATION FOR EXPRESSWAY CAPACITY ANALYSIS IN CHINA