AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles

AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles

AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles

AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles First Edition The objective of this report is to identify known relationships between commercial vehicle safety and crash causation factors and to prepare a synthesis of safety implications of oversize overweight (OS/OW) commercial vehicles.

This AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles can be used to support commercial vehicle enforcement and permitting practices and justify expenditures and investments on size and weight enforcement to enhance safety. In producing this report, insight was gained into the impacts of truck size and weight (TSW) regulations through three case studies.

AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles The state of practice in estimating large truck crash rates is complicated because of the many configurations and the wide range of possible weights for any particular configuration. This report highlights four primary findings regarding the contributions of OS/OW to commercial vehicle crashes found by its researchers.

Table of content AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles
Section 1. Introduction
Objective
Background
the Project
Content of this Report

Section 2. The Concern Heavy Commercial Truck Growth
Reason for Concern
Explosion in Growth of Large Commercial Vehicles
Summary of Commercial Vehicle Growth
Case Study—Minnesota Investigation of Larger Commercial Vehicles
Summary of Case Study
Section Summary

Section 3. Heavy Vehicle Types, Weights, and Sizes
Types of Vehicles
Size and Weight Regulations
Legal OS/OW Trucks
Section Summary

Section 4. Truck Characteristics Affecting Crashes, AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles
Introduction
Truck Weights and Loads
Truck Types and Sizes
Truck Brake Systems
Antilock Brakes
Speed
Vehicle Roadway Interaction
Drivers
Prominent Crash Types
Section Summary

Section 5. Heavy Truck Crashes in General
Early Large Truck Safety Research
More Recent Large Truck Safety Research
Enforcement : Roadside Inspections, Weigh Stations
Overview of Fatal Large Truck Crashes
Section Summary

Section 6. Data Associated with OS/OW Heavy Vehicles
Two Meanings for OS/OW Vehicles
Comprehensive Data Is Necessary
Data Sets with Promise
Data for Which OS/OW was Established or Probable
Data for LCVs and Other Large, Heavy Commercial Vehicles

Section 7. Illustrative Case Studies
Case Study: States with Special Overweight Exemptions

Section 8. Summary, Findings, and Recommendations

Item Code : AASHTO OSOW-1
ISBN Number : 1-56051-466-4
Item Pages : 116 Pages
Download Type : PDF File, AASHTO A Synthesis of Safety Implications of Oversize Overweight Commercial Vehicles


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