A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Impact of Shoulder Width and Median Width on Safety. National Cooperataive Highway Rersearch Program
The objectives of this research were to quantify the safety and operational impacts of designelement trade-offs and to develop guidelines to assist designers in making reasonable choiceswhen applying context-sensitive solutions and design exceptions. Existing research results were combined with recent practical field experience to provide a guide for planners and designersto understand relationships and quantify the trade-offs for selected design elements.This research provides the highway design community with information resources and decisiontools for designing roadways where design flexibility may be appropriate to the roadway context. The research was completed in two phases. The first phase was a literature review and thedevelopment of a methodology for data collection and analysis to be used in the second phase.In the second phase, data were collected and analyzed to develop the resources andtools needed for understanding the safety and operational impacts from design elementtrade-offs.This report documents the findings of the research. The literature review determined that a significant amount of research had been undertaken in an attempt to quantify the relationshipsbetween safety and roadway design elements, but that these relationships were not availablefor cross-section elements on multilane rural roads. Therefore, in an investigation to determinethe safety impacts of design flexibility on rural multilane highways, the NCHRP project panel recommended that the second phase of the research focus on three geometric elements:lane width, shoulder width, and median type and width.
Impact of Shoulder Width and Median Width on Safety. National Cooperataive Highway Rersearch Program
The objectives of this research were to quantify the safety and operational impacts of designelement trade-offs and to develop guidelines to assist designers in making reasonable choiceswhen applying context-sensitive solutions and design exceptions. Existing research results were combined with recent practical field experience to provide a guide for planners and designersto understand relationships and quantify the trade-offs for selected design elements.This research provides the highway design community with information resources and decisiontools for designing roadways where design flexibility may be appropriate to the roadway context. The research was completed in two phases. The first phase was a literature review and thedevelopment of a methodology for data collection and analysis to be used in the second phase.In the second phase, data were collected and analyzed to develop the resources andtools needed for understanding the safety and operational impacts from design elementtrade-offs.This report documents the findings of the research. The literature review determined that a significant amount of research had been undertaken in an attempt to quantify the relationshipsbetween safety and roadway design elements, but that these relationships were not availablefor cross-section elements on multilane rural roads. Therefore, in an investigation to determinethe safety impacts of design flexibility on rural multilane highways, the NCHRP project panel recommended that the second phase of the research focus on three geometric elements:lane width, shoulder width, and median type and width.
Impact of Shoulder Width and Median Width on Safety. National Cooperataive Highway Rersearch Program
N. Stamtiadis (author) / J. Pigman (author) / J. Sackstederr (author) / W. Ruff (author) / D. Lord (author)
2009
123 pages
Report
No indication
English
Association of Median Width and Highway Accident Rates
| British Library Online Contents | 1993
Safety Analysis of Expressway's Shoulder Width
| British Library Conference Proceedings | 2012
| NTIS | 1976
Headlight glare and median width
| Engineering Index Backfile | 1965
Factors Affecting Selection of Lane Width and Shoulder Width on Urban Freeways
| British Library Online Contents | 1994