00605648

Component

http://onlinepubs.trb.org...trr/1990/1287/1287-014.pdf

https://scholar.google.co...anis&publication_year=1990

The two main approaches to capacity and delay estimation are probabilistic and deterministic. The probabilistic approach is used for designing unsignalized intersections in the United States; the deterministic approach is used for the same purpose in Great Britain. The probabilistic approach given in the 1985 Highway Capacity Manual underestimates capacity. Reevaluating both the probabilistic and deterministic approaches is necessary. A clear evaluation framework is developed for comparing these two approaches from the perspective of modeling theory. The two approaches are evaluated in terms of theory and methodology, validity, policy sensitivity, simplicity, data requirements, and compatibility. The strengths and weaknesses of each approach toward providing future research directions on unsignalized intersectons in the United States are discussed.

This paper appears in Transportation Research Record No. 1287, Traffic Flow, Capacity, Roadway Lighting, and Urban Traffic Systems 1990. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411069

p. 129-137

1990

Transportation Research Record

0309050626

Figures (3) ; References (29)

Accuracy; Determinants (Mathematics); Estimating; Evaluation; Highway capacity; Mathematical analysis; Methodology; Probability; Theory; Traffic delays; Unsignalized intersections; Validity

Highway Capacity Manual

Deterministic analysis; Probabilistic analysis

United Kingdom; United States

Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; I71: Traffic Theory

TRIS, TRB, ATRI

Mar 31 1991 12:00AM

• ADAPTIVE FORECASTING OF FREEWAY TRAFFIC CONGESTION
• CAPACITY AND SPEED-FLOW ANALYSIS OF THE QUEEN ELIZABETH WAY IN ONTARIO
• COMBINED EFFECT OF RADIUS AND PEDESTRIANS ON RIGHT-TURN SATURATION FLOW AT SIGNALIZED INTERSECTIONS
• CONFLICT SIMULATION IN INTRAS: APPLICATION TO WEAVING AREA CAPACITY ANALYSIS
• CONGESTION IDENTIFICATION ASPECTS OF THE MCMASTER INCIDENT DETECTION ALGORITHM
• CONSPICUITY OF RETROREFLECTIVE SIGNS AND DEVICES AT NIGHT WHEN DRIVING WITH ONLY ONE HEADLAMP WORKING
• COUNTERBEAM LIGHTING, A PROVEN ALTERNATIVE FOR THE LIGHTING OF THE ENTRANCE ZONES OF ROAD TUNNELS
• DETECTING ERRONEOUS LOOP DETECTOR DATA IN A FREEWAY TRAFFIC MANAGEMENT SYSTEM
• ESTIMATING AVERAGE CYCLE LENGTHS AND GREEN INTERVALS OF SEMIACTUATED SIGNAL OPERATIONS FOR LEVEL-OF-SERVICE ANALYSIS
• ESTIMATING CAPACITY OF AN ALL-WAY-STOP-CONTROLLED INTERSECTION
• FLOW PROCESSES AT A FREEWAY BOTTLENECK
• LATE-NIGHT TRAFFIC SIGNAL CONTROL STRATEGIES FOR ARTERIAL SYSTEMS
• MEASURING DELAY AND SIMULATING PERFORMANCE AT ISOLATED SIGNALIZED INTERSECTIONS USING CUMULATIVE CURVES
• MEASURING LEVEL OF SERVICE OF TWO-LANE HIGHWAYS BY OVERTAKINGS
• MODEL OF TURNING MOVEMENT PROPENSITY
• MODELING THE LEFT-TURN ADJUSTMENT FACTOR FOR PERMITTED LEFT TURNS MADE FROM SHARED LANE GROUPS
• MULTIBAND--A VARIABLE-BANDWIDTH ARTERIAL PROGRESSION SCHEME
• ON-LINE DIVERSION PREDICTION FOR DYNAMIC CONTROL AND VEHICLE GUIDANCE IN FREEWAY CORRIDORS
• PREDICTION OF TRAFFIC FLOW BY AN ADAPTIVE PREDICTION SYSTEM
• SIMULTANEOUS OPTIMIZATION OF SIGNAL SETTINGS AND LEFT-TURN TREATMENTS
• TESTING AND FIELD IMPLEMENTATION OF THE MINNESOTA VIDEO DETECTION SYSTEM (AUTOSCOPE)
• TRAFFIC CONFLICT VALUES FOR THREE-LEG, UNSIGNALIZED INTERSECTIONS
• TRAFFIC SIGNAL DELAY MODEL FOR NONUNIFORM ARRIVALS
• WASHINGTON STATE UNIVERSITY PARKING ACTION PLAN--A CAMPUS PARKING CASE STUDY