Criteria for Passing Sight Distance for Roadway Design and Marking
The need for changes in the criteria for passing sight distance (PSD) used for design of two-lane highways and for marking of passing and no-passing zones on two-lane highways was investigated. PSD models from the AASHTO Green Book and the "Manual on Uniform Traffic Control Devices" were first compared with models developed in previous research to determine the most accurate representation of the passing maneuver. Two existing models warranted further consideration. Field studies were then conducted in Missouri and Pennsylvania; recent field data from a study in Texas were also evaluated to validate the assumptions made in the passing models. On the basis of current driver behaviors, no change was needed in the PSD criteria used for marking passing and no-passing zones. The research found that two-lane highways could be safely designed with PSD criteria equal to or greater than the PSD criteria used in marking passing and no-passing zones, instead of the longer PSD values currently used in design. Therefore, the use of the current PSD marking criteria in design is recommended. This practice will provide desirable consistency between PSD design and marking practices.
- Record URL:
- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://www.trb.org/Main/Blurbs/Highway_Design_2010_165053.aspx
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Authors:
- Harwood, Douglas W
- Gilmore, David K
- Richard, Karen R
- Publication Date: 2010
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 36-46
- Monograph Title: Highway Design 2010
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Issue Number: 2195
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Field studies; Highway design; Mathematical models; No passing zones; Passing sight distance; Passing zones; Road markings; Two lane highways
- Identifier Terms: AASHTO Green Book; Manual on Uniform Traffic Control Devices
- Subject Areas: Design; Highways; Operations and Traffic Management; I20: Design and Planning of Transport Infrastructure; I73: Traffic Control;
Filing Info
- Accession Number: 01151050
- Record Type: Publication
- ISBN: 9780309160711
- Report/Paper Numbers: 10-2621
- Files: PRP, TRIS, TRB, ATRI
- Created Date: Feb 22 2010 10:28AM