00621691

Component

http://onlinepubs.trb.org...trr/1991/1320/1320-016.pdf

https://scholar.google.co...vneh&publication_year=1991

Traffic operation on two-lane rural highways is unique; no lane change is permitted, and overtaking and passing are possible only in the opposing lane of the oncoming traffic. Traffic flow and capacity characteristics on two-lane highways were investigated. Several models were developed for the relationships between flow parameters. The relationships varied from one road to another and were dependent on the characteristics of each site. Thus, the hourly capacity volume is not a clear, single value. It primarily depends on the geometric and traffic characteristics of the highway section and on the time interval for which the flow data are collected. The two-way hourly capacity value was found to be about 2,650 passenger cars per hour in both directions. This value was close to the general (extended section) capacity given in the Highway Capacity Manual (HCM) for conditions similar to those in this study. The speeds at which capacity occurs, on the other hand, were lower than the HCM values: about 40 km/hr versus about 70 km/hr. Further research on the proper time interval for an analysis of highway capacity and on flow regimes and capacity values for various geometric, terrain, and traffic characteristics is suggested.

This paper appears in Transportation Research Record No. 1320, Freeway Operations, Highway Capacity, and Traffic Flow 1991. 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

01407170

p. 128-134

1991

Transportation Research Record

0309051533

Figures (7) ; References (6) ; Tables (4)

Highway capacity; Rural highways; Traffic flow; Traffic simulation; Traffic speed; Two lane highways

Highway Capacity Manual

Highways; Operations and Traffic Management; I71: Traffic Theory

TRIS, TRB, ATRI

Apr 30 1992 12:00AM

• ALINEA: A LOCAL FEEDBACK CONTROL LAW FOR ON-RAMP METERING
• ASSESSMENT OF THE TRAFFIC EXPERIMENTAL AND ANALYSIS SIMULATION COMPUTER MODEL USING FIELD DATA
• BENEFITS OF CENTRAL COMPUTER CONTROL FOR DENVER RAMP-METERING SYSTEM
• CAPACITY AND DELAY CHARACTERISTICS OF TWO-WAY STOP-CONTROLLED INTERSECTIONS
• CHARACTERISTICS AND LEVEL-OF-SERVICE ESTIMATION OF TRAFFIC FLOW ON TWO-LANE RURAL ROADS IN FINLAND
• DELAY EFFECTS ON DRIVER GAP ACCEPTANCE CHARACTERISTICS AT TWO-WAY STOP-CONTROLLED INTERSECTIONS
• DEVELOPMENT OF APPROPRIATE DESIGN-HOUR VOLUMES FOR URBAN FREEWAYS IN LARGE TEXAS CITIES
• EMPIRICAL ANALYSIS OF CONGESTED TRAFFIC FLOW CHARACTERISTICS AND FREE SPEED AFFECTED BY GEOMETRIC FACTORS ON AN INTERCITY EXPRESSWAY
• ENHANCEMENT AND FIELD TESTING OF A DYNAMIC FREEWAY SIMULATION PROGRAM
• EVALUATION OF HIGH-VOLUME URBAN TEXAS FREEWAYS
• EXAMINATION OF THE SPEED-FLOW RELATIONSHIP AT THE CALDECOTT TUNNEL
• FREEWAY CAPACITY DROP AND THE DEFINITION OF CAPACITY
• FREEWAY CONTROL USING A DYNAMIC TRAFFIC FLOW MODEL AND VEHICLE REIDENTIFICATION TECHNIQUES
• IMPROVED DATA SCREENING TECHNIQUES FOR FREEWAY TRAFFIC MANAGEMENT SYSTEMS
• INTEGRATED SYSTEM OF FREEWAY CORRIDOR SIMULATION MODELS
• LESS-THAN-TRUCKLOAD TRUCKING IN LOS ANGELES: CONGESTION RELIEF THROUGH TERMINAL SITING
• OPERATIONAL EVALUATION OF TRUCK RESTRICTIONS ON I-20 IN TEXAS
• PROCEDURE FOR VALIDATION OF MICROSCOPIC TRAFFIC FLOW SIMULATION MODELS
• PROPOSED ANALYTICAL TECHNIQUE FOR ESTIMATING CAPACITY AND LEVEL OF SERVICE OF MAJOR FREEWAY WEAVING SECTIONS
• REAL-TIME EXPERT SYSTEM APPROACH TO FREEWAY INCIDENT MANAGEMENT
• REAL-TIME KNOWLEDGE-BASED INTEGRATION OF FREEWAY SURVEILLANCE DATA
• SATURATION FLOW: DO WE SPEAK THE SAME LANGUAGE?
• SIMULATION OF CROWD BEHAVIOR AND MOVEMENT: FUNDAMENTAL RELATIONS AND APPLICATION
• SIMULATION OF TWO- AND FOUR-WAY STOP CONTROL
• THE TWO-CAPACITY PHENOMENON: SOME THEORETICAL ISSUES
• TOLL PLAZA CAPACITY AND LEVEL OF SERVICE
• TOWARD A NEW GERMAN GUIDELINE FOR CAPACITY OF UNSIGNALIZED INTERSECTIONS
• TRAFFIC OPERATION OF BICYCLE TRAFFIC
• TWO-CAPACITY PHENOMENON AT FREEWAY BOTTLENECKS: A BASIS FOR RAMP METERING?