Use of Roundabouts and Innovative Intersection Designs at High-Speed Intersections in Texas [Project Summary]

Brewer, Marcus A.; Fitzpatrick, Kay; Shirinzad, Maryam; Zhou, Hongmin; Florence, David; Tydlacka, Jonathan M.; Dadashova, Bahar; Le, Minh

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Use of Roundabouts and Innovative Intersection Designs at High-Speed Intersections in Texas [Project Summary]

2022-07-31
By Brewer, Marcus A. ; Fitzpatrick, Kay ; Shirinzad, Maryam

File Language:

English

Details

Creators:

Brewer, Marcus A. ; Fitzpatrick, Kay ; Shirinzad, Maryam ; Zhou, Hongmin ; Florence, David ; Tydlacka, Jonathan M. ; Dadashova, Bahar ; Le, Minh
Corporate Creators:

Texas A&M Transportation Institute
Contributors:

Odell, Wade
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

0-7036
Resource Type:

Brief
Geographical Coverage:

Texas;United States
Edition:

Project Summary Report
Corporate Publisher:

Texas A&M Transportation Institute
Abstract:

Innovative intersection designs (e.g., diverging diamond interchanges DDIs, displaced left turns DLTs, median U-turns MUTs, and restricted crossing U-turns RCUTs) and modern roundabouts have been used successfully to remove conflict points and redistribute turning traffic from traditional intersections. However, minimal guidance exists on using these intersection types at rural and high-speed locations, particularly to serve high volumes of heavy vehicles. This project investigated the operational and safety benefits of modern roundabouts and selected innovative intersection designs for high-speed locations as well as best practices for designing these intersections. Researchers compiled proven results from these designs in other states and collected and analyzed operational and safety data from intersections within and outside Texas to develop updated design guidance, which can be used to implement roundabout designs that accommodate oversize/overweight (OSOW) vehicles and innovative intersections that provide appropriate access in rural areas.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/72317/dot_72317_DS1.pdf
File Type:

[PDF - 276.80 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:3d5125d6eddf5b8bb7963edb82ebd5481116e07eba97711b911625c8aedfe009806e4011782d18d40f47f1b4787a13ebb92c5ddbbdbd9248997837e2cf3fdd11

File Language:

English

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