Author: William D. BergPublisher:
ISBN:
Category : Railroad crossings
Languages : en
Pages : 23
Book Description
Evaluating the Safety Benefits of Railroad Advance Warning Signs
Author: William D. BergPublisher:
ISBN:
Category : Railroad crossings
Languages : en
Pages : 23
Book Description
Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs
Author: William D. BergPublisher:
ISBN:
Category : Railroad crossings
Languages : en
Pages : 68
Book Description
The report presents the findings and conclusions of a study to develop an experimental design and analysis plan for field testing and evaluation of the accident reduction potential of a proposed new railroad grade crossing advance warning sign. Several alternative sampling frameworks were initially developed to determine which might offer the most efficient design in terms of required sample size. The cost of undertaking the field studies and analyses was then evaluated so that it could be compared to the expected value or utility of the information to be derived from the study. The results indicated that the proposed accident study would be both experimentally and economically impractical. It was therefore recommended that an accident study not be undertaken. Several policy options were then examined.
Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs. Final Report
Author: William D. BergExperimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs
Author: Wm. D. BergPublisher:
ISBN:
Category :
Languages : en
Pages : 63
Book Description
"Abstract: This report presents the findings and conclusions of a study to develop an experimental design and analysis plan for field testing and evaluation of the accident reduction potential of a proposed new railroad grade crossing advance warning sign. Several alternative sampling frameworks were initially developed to determine which might offer the most efficient design in terms of required sample size. because of the very large sample sizes associated with the alternative sampling frameworks, an analysis was undertaken to determine the minimum relative reduction in accident rate which would economically justify deployment of the new advance warning sign. The cost of undertaking the field studies and analyses was then evaluated so that it could be compared to the expected valye or utility of the information to be derived from the study. The results indicated that the proposed accident study would be both experimentally and economically impractical. It was therefore recommended that an accident study not be undertaken. Several policy options were then examined."--Technical report documentation page.
Experimantal Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs
Author: W. D. BergEvaluation of Selected Warning Signs at Skewed Railroad-highway Crossings
Author: Todd CollierPublisher:
ISBN:
Category : Railroad crossings
Languages : en
Pages : 24
Book Description
A 1984 study by the Research Council recommended that advance warning signs be placed in advance of skewed railroad-highway grade crossings. Several signs were suggested for use, and the study reported here was undertaken to determine the effectiveness of two of these signs. The study focused upon how well cyclists observed and understood the signs. Questionnaires were distributed to motorcylists in the Harrisonburg area, and interviews were conducted with bicyclists encountered on the campus of James Madison University. Both of the suggested signs were found to be effective, but one was superior and its use is recommended.
Field Evaluation of Innovative Active Warning Devices for Use at Railroad-highway Grade Crossings
Author: Kenneth W. HeathingtonPublisher:
ISBN:
Category : Highway-railroad grade crossings
Languages : en
Pages : 288
Book Description
Research was conducted to identify and evaluate innovative active warning devices with potential for improving safety at railroad-highway grade crossings. Candidate devices were identified and/or developed, and the most promising devices were evaluated in a detailed laboratory study. Three of the devices were chosen for field evaluation: (1) four-quadrant gates with skirts and flashing light signals; (2) four-quadrant flashing light signals with overhead strobes; and (3) highway traffic signals with white bar strobes in all red lenses. The report documents the methodology and results of the field evaluations, presents a summary of the research leading up to the field evaluations, and presents the results of benefit-cost analyses for the innovative devices and guidelines for their implementation.
Report No. FHWA-RD.
Author: United States. Federal Highway Administration. Offices of Research and DevelopmentPublisher:
ISBN:
Category :
Languages : en
Pages : 646
Book Description
Highway Safety 1980. A Report on Activities Under the Highway Safety Act of 1966 as Amended. January 1, 1980 - December 31, 1980
Author: Safety Effectiveness Evaluation
Author: United States. National Transportation Safety BoardPublisher:
ISBN:
Category : Railroad crossings
Languages : en
Pages : 52
Book Description
The National Transportation Safety Board examined nighttime accidents in which highway vehicles strike trains that block grade crossings. There is adequate evidence to suggest that this type of accident is strongly influenced by motorists' inability to perceive the presence of trains in crossings because trains lack conspicuity within their environment. This type of accident results each year in approximately 1,800 collisions with 140 persons killed and 800 injured. The Safety Board reviewed pertinent research undertaken by the Federal Railroad Administration (FRA) on a known countermeasure--reflectorization. The Safety Board issued recommendations to the FRA to develop and issue an advance notice of proposed rulemaking within 6 months for the improvement of nighttime train car and locomotive visibility at grade crossings to aid in preventing accidents in which motor vehicles run into the sides of trains at night. Additionally, the Board recommended that the FRA cooperate with the Federal Highway Administration, the National Committee on Uniform Traffic Control Devices, and the Association of American Railroads to plan and institute a research program on criteria for the use of reflectorization devices and materials.