Best practices for roundabouts on state highways.

Christopher M. Day,; Alexander M. Hainen,; Darcy M. Bullock; Purdue University. Joint Transportation Research Program

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Best practices for roundabouts on state highways.

2013-07-01
By Christopher M. Day, ; Alexander M. Hainen, ; Darcy M. Bullock

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English

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Details:

Creators:

Christopher M. Day, ; Alexander M. Hainen, ; Darcy M. Bullock

Christopher M. Day, ; Alexander M. Hainen, ; Darcy M. Bullock Less -
Corporate Creators:

Purdue University. Joint Transportation Research Program
Corporate Contributors:

United States. Federal Highway Administration ; Indiana. Dept. of Transportation

United States. Federal Highway Administration ; Indiana. Dept. of Transportation Less -
Subject/TRT Terms:

[+]

Alternatives Analysis Best Practices Gap Acceptance Headways Highway Capacity Location Roundabouts Street Lighting
Publication/ Report Number:

FHWA/IN/JTRP-2013/14
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Purdue University. Joint Transportation Research Program
Abstract:

This report presents a series of research findings from an investigation into roundabout operations. This includes a comparison of

several analysis tools for estimating roundabout performance (the Highway Capacity Manual, SIDRA, ARCADY, VISSIM, and SimTraffic); a

measurement of rejected headways for the purpose of analyzing critical headway; a review of roundabout lighting practices; and a

review of considerations for roundabout site selection. It was found that VISSIM and SIDRA provided the most reliable predictions of

roundabout performance for the test site analyzed herein. Additionally, the critical headways measured at this site were significantly

lower (at a median value of 2.2 seconds) than other values published in the literature, with driving populations less acquainted with

roundabouts. Additionally, a site selection procedure is developed based on a survey of peer agency practices and a checklist is provided

for assisting in the determination of whether roundabout control is a feasible alternative for a location. Finally, based upon a review of

the literature and practices commonly followed by peer states, we recommend that roundabouts be lighted.
Format:

PDF
Funding:

SPR-3530
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:b4ecfbddc0502ff4442e8879828e0278c800bca2f675b6883eb56ffc53fe6f04
Download URL:

https://rosap.ntl.bts.gov/view/dot/26744/dot_26744_DS1.pdf
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Best practices for roundabouts on state highways.

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