Author: Mario G. Candia-MartinezPublisher:
ISBN:
Category : Tractor trailer combinations
Languages : en
Pages : 150
Book Description
Classification of Longer Combination Vehicles Using Weigh-in-motion Data
Author: Mario G. Candia-MartinezPublisher:
ISBN:
Category : Tractor trailer combinations
Languages : en
Pages : 150
Book Description
Length Based Vehicle Classification from Single Loop Detector Data
Author: Seoungbum KimPublisher:
ISBN:
Category : Vehicle detectors
Languages : en
Pages : 260
Book Description
Abstract: Over the years many vehicle classification schemes have been developed to sort passing vehicles into several classes according to their length, number of axles, axle spacing, number of units or some other combination of vehicle features. Vehicle classification is important for infrastructure management, traffic modeling, and quantifying emissions along highways. Weigh-in-motion (WIM), axle counting, and length from dual loop detectors are commonly used for vehicle classification on freeways.
Estimation of Equivalent Axleloads Using Data Collected by Automated Vehicle Classification and Weigh-in-motion Equipment
Author: Herbert Fletcher SouthgatePublisher:
ISBN:
Category : Motor vehicle scales
Languages : en
Pages : 0
Book Description
Traffic-load Forecasting Using Weigh-in-motion Data
Author: Tongbin QuPublisher:
ISBN:
Category : Electronic weighing systems
Languages : en
Pages : 136
Book Description
High Speed Weigh-in-motion System Calibration Practices
Author: A. T. PapagiannakisPublisher: Transportation Research Board
ISBN: 0309098157
Category : Motor vehicle scales
Languages : en
Pages : 413
Book Description
Regulation of Weights, Lengths, and Widths of Commercial Motor Vehicles
Author: Transportation Research BoardPublisher: National Academies Press
ISBN: 030907701X
Category : Transportation
Languages : en
Pages : 283
Book Description
TRB Special Report 267 - Regulation of Weights, Lengths, and Widths of Commercial Motor Vehicles recommends the creation of an independent public organization to evaluate the effects of truck traffic, pilot studies of new truck designs, and a change in federal law authorizing states to issue permits for operation of larger trucks on the Interstates. In 1991, Congress placed a freeze on maximum truck weights and dimensions. Some safety groups were protesting against the safety implications of increased truck size and weight, and the railroads were objecting to the introduction of vehicles they deemed to have an unfair advantage. Railroads, unlike trucking firms, must pay for the capital costs of their infrastructure. The railroads contend that large trucks do not pay sufficient taxes to compensate for the highway damage they cause and the environmental costs they generate. Although Congress apparently hoped it had placed a cap on maximum truck dimensions in 1991, such has not proven to be the case. Carriers operating under specific conditions have been able to seek and obtain special exceptions from the federal freeze by appealing directly to Congress (without any formal review of the possible consequences), thereby encouraging additional firms to seek similar exceptions. In the Transportation Equity Act for the 21st Century, Congress requested a TRB study to review federal policies on commercial vehicle dimensions. The committee that undertook the study that resulted in Special Report 267 found that regulatory analyses of the benefits and costs of changes in truck dimensions are hampered by a lack of information. Regulatory decisions on such matters will always entail a degree of risk and uncertainty, but the degree of uncertainty surrounding truck issues is uunusually high and unnecessary. The committee concluded that the uncertainty could be alleviated if procedures were established for carrying out a program oof basic and applied research, and if evaluation and monitoring were permanent components of the administration of trucking regulations. The committee recommended immediate changes in federal regulations that would allow for a federally supervised permit program. The program would permit the operation of vehicles heavier than would normally be allowed, provided that the changes applied only to vehicles with a maximum weight of 90,000 pounds, double trailer configurations with each trailer up to 33 feet, and an overall weight limit governed by the federal bridge formula. Moreover, enforcement of trucks operating under such a program should be strengthened, and the permits should require that users pay the costs they occasion. States should be free to choose whether to participate in the permit program. Those that elected to do so would be required to have in place a program of bridge management, safety monitoring, enforcement, and cost recovery, overseen by the federal government. The fundamental problem involved in evaluating proposals for changes in truck dimensions is that their effects can often only be estimated or modeled. The data available for estimating safety consequences in particular are inadequate and probably always will be. Thus, the committee that conducted this study concluded that the resulting analyses usually involve a high degree of uncertainty. What is needed is some way to evaluate potential changes through limited and carefully controlled trials, much as proposed new drugs are tested before being allowed in widespread use. The committee recommended that a new independent entity be created to work with private industry in evaluating new concepts and recommending changes to regulatory agencies. Limited pilot tests would be required, which would need to be carefully designed to avoid undue risks and ensure proper evaluation. Special vehicles could be allowed to operate under carefully controlled circumstances, just as oversize and overweight vehicles are allowed to operate under special permits in many states. Changes in federal laws and regulations would be required to allow states to issue such permits on an expanded network of highways, under the condition that a rigorous program of monitoring and evaluation be instituted.Special Report 269 Summary
Highway Capacity and Freight Mobility
Author: United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Highways, Transit, and PipelinesPublisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 104
Book Description
Summary and Recommendations of the Conference on FHWA Truck Travel Data
Author: Master's Theses Directories
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 306
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Statistical Analysis of Heavy Truck Loads Using Wisconsin Weigh-in-motion Data
Author: Habib TabatabaiPublisher:
ISBN:
Category : Trucks
Languages : en
Pages : 208
Book Description