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Title:

Roundabout Geometric Design Guidance
Cover of Roundabout Geometric Design Guidance

Accession Number:

01125494

Record Type:

Monograph

Availability:

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Order URL: http://worldcat.org/oclc/309871344

Abstract:

This report examines geometric standards, guidelines, and practices, both on a state level and a national level), for developing recommendations on roundabout design guidance for California. The research involved assessing the operational performance of various California roundabouts and developing calibrated capacity models that are consistent with recent national research. A calibrated intersection sight distance model was also developed. Pedestrian and bicycle behavior at existing California roundabouts was examined, and their performance was compared to national observation. Finally, a range of recommendations on geometric design parameters were developed, including vehicle speeds, design vehicle, inscribed circle diameter, and issues related to roundabouts with more than four legs, roundabouts at freeway interchange terminals, and roundabouts in high-speed environments.

Report Numbers:

F/CA/RI-2006/13

Contract Numbers:

65A0229

OCLC:

309871344

Language:

English

Corporate Authors:

California Department of Transportation

Division of Research and Innovation, 1227 O Street, P.O. Box 942873
Sacramento, CA 94273-0001 USA

University of Nevada, Reno

Department of Civil and Environmental Engineering
Reno, NV 89557 USA

Authors:

Tian, Zong Z
Xu, Feng
Rodegerdts, Lee A
Scarbrough, Wade E
Ray, Brian L
Bishop, William E
Ferrara, Thomas C
Mam, Sannow

Pagination:

81p

Publication Date:

2007-6

Edition:

Final Report

Media Type:

Print

Features:

Appendices; Bibliography; Figures (29) ; References; Tables (22)

Geographic Terms:

Subject Areas:

Design; Highways; Operations and Traffic Management; I73: Traffic Control

Source Agency:

UC Berkeley Transportation Library

Source Data:

Caltrans 1372

Files:

CALTRANS, TRIS, STATEDOT

Created Date:

Mar 4 2009 5:52PM