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The Transportation Research Board established a 19-member Double-Trailer Truck Monitoring Study Committee to consider the full range of potential impacts, so that a balanced view of the benefits and costs of expanded doubles use could be presented. The study will evaluate the effects in 3 areas: changes in the extent of doubles traffic as the trucking industry responds to regulations, and the resultant benefits in transportation productivity; the safety of doubles compared to the singles traffic they will replace; and the effect of doubles on road wear, traffic operations, and geometric design requirements. This article describes the previous use of doubles, the changes in truck size and configuration regulations enacted in 1982, and prior analyses of the effects of doubles particularly on safety and pavement wear. The effect of expanded double trailer use on trucking industry productivity is also considered.

p. 15-21

1984-9

TR News

Photos (3) ; References (19) ; Tables (1)

Axle load force; Benefits; Costs; Geometric design; Highway operations; Highway safety; Impact studies; Monitoring; Policy; Productivity; Regulations; Tractor trailer combinations; Traffic; Trucking; Trucks; Vehicle size

Finance; Freight Transportation; Highways; Law; Motor Carriers; Operations and Traffic Management; Policy; Safety and Human Factors; Society; Vehicles and Equipment; I73: Traffic Control

TRIS, TRB

Jan 30 1985 12:00AM

• CRITICAL ISSUES IN TRANSPORTATION
• EARTH WALLS
• RESEARCH PAYS OFF--NEW JERSEY DOT DEVELOPS IMPROVED PROCEDURE FOR ADJUSTING MANHOLES
• THE TRIS CONNECTION: LINKING USERS WITH SUCCESS
• USING ALTERNATIVE RETAINING WALLS IN REBUILDING THE FREEWAY SYSTEM IN ATLANTA