00489690

Component

http://onlinepubs.trb.org...trr/1988/1195/1195-006.pdf

https://scholar.google.co...scom&publication_year=1988

This paper gives results and conclusions from part of a study done for the Federal Highway Administration on the safety and operational effects of large truck operations. Computer simulation and manual observations at six intersections in California and New Jersey were used to investigate turns by large trucks at urban intersections. The encroachment of a truck into adjacent lanes during a turn was studied using the computer simulation. The field data examined on a particular truck turn included the encroachment, the time to complete the turn, and the conflicts with other vehicles in the traffic stream caused by the truck. Field observations were made of turning trucks in the traffic stream and also of a control truck of known size driven repeatedly through a study intersection by a professional driver who knew the purpose of the experiment. The results showed that small curb radii, narrow lane widths, and narrow total street widths were among the geometric features associated with increased operational problems. The results also showed that large trucks will have little impact (compared with smaller trucks) at most urban intersections of the types tested, but some adverse operational effects should be expected at some intersections. Trailer length was found to be a more critical element to smooth operations than trailer width for the trucks tested. Many site, driver, and equipment factors should be considered before the decision is made to regulate truck traffic in a certain manner.

This paper appears in Transportation Research Record No. 1195, Geometric Design and Operational Effects. 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

01413994

p. 64-74

1988

Transportation Research Record

0309047609

Figures (3) ; References (6) ; Tables (8)

Curbs; Field studies; Interchanges; Intersections; Length; Motor vehicles; Operations; Oversize loads; Radius; Right of way (Land); Safety; Simulation; Tractor trailer combinations; Traffic lanes; Trucks; Turning radius; Urban areas; Vehicle length; Vehicle size; Width

Longer combination vehicles

Administration and Management; Design; Highways; Motor Carriers; Planning and Forecasting; Safety and Human Factors; I21: Planning of Transport Infrastructure

TRIS, TRB, ATRI

Nov 30 1989 12:00AM

• ACCIDENT EFFECTS OF SIDESLOPE AND OTHER ROADSIDE FEATURES ON TWO-LANE ROADS
• COMPUTER SIMULATION STUDY OF THE OPERATIONAL EFFECTS OF TWO-WAY LEFT-TURN LANES ON URBAN FOUR-LANE ROADWAYS
• DESIGN GUIDE FOR AUXILIARY PASSING LANES ON RURAL TWO-LANE HIGHWAYS
• DEVELOPMENT OF LIMITING VELOCITY MODELS FOR THE HIGHWAY PERFORMANCE MONITORING SYSTEM (ABRIDGMENT)
• EFFECTIVE USE OF PASSING LANES ON TWO-LANE HIGHWAYS
• INTERSECTION CHANNELIZATION GUIDELINES FOR LONGER AND WIDER TRUCKS
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• NEW AND IMPROVED MODEL OF PASSING SIGHT DISTANCE ON TWO-LANE HIGHWAYS
• POSSIBLE DESIGN PROCEDURE TO PROMOTE DESIGN CONSISTENCY IN HIGHWAY GEOMETRIC DESIGN ON TWO-LANE RURAL ROADS
• SAFETY EFFECTS OF CROSS-SECTION DESIGN FOR TWO-LANE ROADS
• TANGENT AS AN INDEPENDENT DESIGN ELEMENT
• TWO-WAY LEFT-TURN LANE GUIDELINES FOR URBAN FOUR-LANE ROADWAYS
• UNIFORM DELAY APPROACH TO WARRANTS FOR CLIMBING LANES