00153162

Component

http://onlinepubs.trb.org...s/trr/1976/601/601-012.pdf

http://scholar.google.com...hael&publication_year=1976

This paper reports the results of a study of the effects of commercial vehicles on intersection delay. The objective was to determine the delay to through traffic at signalized intersections caused by commercial vehicles and to determine the effect of intersection corner radii on right-turn speeds of commercial vehicles. Commercial vehicles are defined as any vehicle having at least six tires and two or more axles. Data were collected at intersections in five cities in Indiana. Twenty-three intersection approaches were studied for commercial vehicle delay, and 19 intersection corner radii were studied for right-turn speeds of commercial vehicles. The results of this research are both quantitative and qualitative. It was found that the average travel time of a passenger car through a signalized intersection was increased from 39.9 to 49.4s where one or more commercial vehicles were traveling ahead of it in the same platoon of vehicles. Significant factors or variables were found to either increase of decrease delay due to commercial vehicles. Right-turn speeds of passenger cars, truck combinations, and commercial vehciles were found for varying intersection corner radii. From a delay viewpoint, a 9-m (30-ft) radius was found to be optimum for a singly-unit truck and an 68-m (60-ft) radius was found optimum for a truck combination. /Author/

Publication of this paper sponsored by Committee on Operational Effects of Geometrics. 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.

01411456

pp 59-65

1976

Transportation Research Record

0309025702

Digital/other

Figures (5) ; References (11) ; Tables (4)

Automobiles; Commercial vehicles; Data collection; Motor vehicles; Right turns; Signalized intersections; Speed; Tractor trailer combinations; Traffic delays; Traffic speed; Travel time

Highways; Motor Carriers; Operations and Traffic Management

TRIS, TRB

May 31 1977 12:00AM

• AN APPROACH FOR MAXIMIZING THE CAPACITY OF SELF-SERVICE PARKING FACILITIES
• CHARACTERISTICS OF INTERSECTION ACCIDENTS IN RURAL MUNICIPALITIES (ABRIDGMENT)
• COST EFFECTIVENESS OF FREEWAY COURTESY PATROLS IN HOUSTON
• DEVELOPMENTS IN AUTOMATIC VEHICLE IDENTIFICATION DURING 1974 AND 1975
• EFFECT OF BRIDGE SHOULDER WIDTH ON TRAFFIC OPERATIONAL CHARACTERISTICS (ABRIDGMENT)
• EFFECT OF GUARDRAILS ON INTERSTATE BRIDGES ON VEHICLE SPEED AND LATERAL PLACEMENT (ABRIDGMENT)
• EFFECT OF THE ENERGY CRISIS ON EXISTING DESIGN STANDARDS
• EVALUATION OF FACTORS INFLUENCING DRIVEWAY ACCIDENTS
• FRAMEWORK FOR DESIGN AND OPERATION OF PASSING ZONES ON TWO- LANE HIGHWAYS
• HIGHWAY ACCIDENTS AT BRIDGES (ABRIDGMENT)
• OPERATING PARAMETERS FOR MAIN LINE SENSORS IN FREEWAY SURVEILLANCE SYSTEMS
• PLANNING TRANSIT FACILITY PARKING FOR THE BOSTON METROPOLITAN AREA
• ROADSIDE ENCROACHMENT PARAMETERS FOR NONFREEWAY FACILITIES (ABRIDGMENT)
• ROADSIDE HAZARDS ON NONFREEWAY FACILITIES (ABRIDGMENT)
• SINGLE POINT DIVERSION OF FREEWAY TRAFFIC
• URBAN FREEWAY CORRIDOR CONTROL MODEL (ABRIDGMENT)