Safety Benefits of Speed Limiters in Commercial Motor Vehicles Using Carrier-Collected Crash Data

2012 ◽  
Vol 16 (4) ◽  
pp. 177-183 ◽  
Author(s):  
Jeffrey S. Hickman ◽  
Feng Guo ◽  
Richard J. Hanowski ◽  
Richard Bishop ◽  
Gene Bergoffen ◽  
...  
Author(s):  
Candace Brown ◽  
Nancy Kennedy ◽  
Don Wright ◽  
Walt Zak

Described is one specific effort to better estimate commercial motor vehicle-related exposure at the state level in order to better determine commercial motor vehicle-related crash rates for state and federal programs. Limitations in the crash and exposure data affect the Federal Motor Carrier Safety Administration and a state’s ability to plan and assess operations and conduct ongoing analyses of program effectiveness. One important limitation has been the lack of reliable estimates of commercial motor vehicle exposure data at the state level. Exposure data, for the purpose of this report, are defined as the number of truck and bus vehicle miles traveled (VMT). Described is the methodology that was developed to calculate adjusted state VMT for commercial vehicles; results are presented for 1999 and 2000. The results support estimation of crash involvement rates for each state and provide exposure data for other analytical studies. The methodology to calculate adjusted state VMT for commercial motor vehicles has resulted in improved information resources in support of all crash analyses. The adjusted state VMT for commercial vehicles supports measurement of program effectiveness and development of countermeasures to promote motor carrier safety. The adjusted state VMT for commercial motor vehicles methodology and the commercial vehicle fatal-crash involvement rate reports enable state and federal agencies to better focus their safety programs and enforcement resources.


Author(s):  
Gerard J. McCullough

TRB Special Report 267: Regulation of Weights, Lengths, and Widths of Commercial Motor Vehicles is critically evaluated. It is an important, congressionally mandated report that contains a series of conclusions and recommendations regarding truck size and weight (TS&W) regulations in the United States. The report concludes that increases in TS&W limits have great potential for increasing freight market efficiency but that safety and other effects are not well understood. To facilitate the liberalization of TS&W limits, the report recommends a revised regulatory regime that would involve federal supervision of state-set limits, with evaluation provided by an independent Commercial Traffic Effects Institute. This evaluation argues that the report focuses too narrowly on trucking efficiency and overlooks transportation efficiency. This narrow analytical perspective significantly limits its usefulness in establishing national transportation policy. Also, there is no analytical basis for the report's most important conclusions and recommendations, either in the report or in earlier TS&W studies evaluated by the Committee for the Study of the Regulation of Weights, Lengths, and Widths of Commercial Motor Vehicles.


1936 ◽  
Vol 15 (1) ◽  
pp. 33
Author(s):  
West ◽  
Skipper ◽  
J. Ward ◽  
J. Hood ◽  
MacGowan ◽  
...  

1978 ◽  
Vol 22 (1) ◽  
pp. 636-639
Author(s):  
Charles B. Stoke

The basic issue concerning mopeds is whether they should be considered as being bicyles—and, basically, be free of regulation, or as motorcycles—and thus be subject to all regulations applicable to motor vehicles. In an effort to resolve this issue, European accident data, Virginia crash data, and the laws of the several states were reviewed. In terms of crash, injury, and fatality data, mopeds are more like motorcycles than bicycles. The laws of the various states lack a uniform approach in dealing with mopeds as a form of transportation. There is little agreement on the specific areas in which there is a need for regulation and how comprehensive this regulation should be. From the review made for this study, it was recommended that a separate category of vehicles be established for mopeds, as they are neither bicycles or motorcycles. It was further recommended that the vehicles be registered, that their operators be licensed, that maximum allowable speed and horsepower be 30 mph and 1.5 bhp, and that liability insurance be made available for purchase by moped owners.


1914 ◽  
Vol 198 (1914) ◽  
pp. 93-100
Author(s):  
E A CALVERT ◽  
A I GRAHAM ◽  
P T HARRISON ◽  
E P HOOLEY ◽  
P W SHAW ◽  
...  

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