FHWA Research and Technology Evaluation: Innovative Intersection Design

Badgley, Jonathan; Fowler, Joshua; Mahavier, Kendall; Peirce, Sean; John A. Volpe National Transportation Systems Center (U.S.)

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FHWA Research and Technology Evaluation: Innovative Intersection Design

2021-08-01
By Badgley, Jonathan ; Fowler, Joshua ; Mahavier, Kendall ; ...

[PDF-2.54 MB]

English

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Details:

Creators:

Badgley, Jonathan ; Fowler, Joshua ; Mahavier, Kendall ; Peirce, Sean

Badgley, Jonathan ; Fowler, Joshua ; Mahavier, Kendall ; Peirce, Sean Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.)
Contributors:

Moulden, John V.
Corporate Contributors:

United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management
Subject/TRT Terms:

[+]

Diamond Interchanges Interchanges And Intersections Left Turns Roundabouts U Turns
Publication/ Report Number:

FHWA-HRT-21-024
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report; 2000–2019
Contracting Officer:

Moulden, John
Corporate Publisher:

United States. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management
Abstract:

This report assesses the effects of the Federal Highway Administration's (FHWA's) investment in the Innovative Intersection Design research program and related activities on the availability and quality of such research; awareness and adoption of innovative intersection designs in the United States; and impact of deployed innovative intersection designs on road-user safety, traffic mobility, and construction costs of the U.S. transportation system. The particular intersection and interchange designs researched by FHWA and included in this evaluation are diverging diamond interchanges, restricted-crossing U-turns, displaced left turns, median U-turns, and mini-roundabouts. Although it is difficult measure the effects of specific FHWA activities, the evaluation found strong evidence of FHWA's influence on the acceptance, consideration, and adoption of innovative intersection designs. The findings suggest awareness, adoption, and deployment are higher than they would have been without FHWA research and activities. FHWA laid the foundation for national adoption and deployment of innovative intersection designs by providing empirical evidence of the potential improvements to safety, mobility, and construction costs; increasing stakeholders' awareness of and confidence in them; and contributing to the development of design standards. FHWA's impact is conservatively estimated to have provided road-user safety, traffic mobility, and construction-cost benefits totaling more than $200 million (undiscounted) over the last decade.
Format:

PDF
Funding:

HW9AA300
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:9de9e9598e90bc5ec10e9029dc34b834518a331936ac05944f063549541c9ee9
Download URL:

https://rosap.ntl.bts.gov/view/dot/56950/dot_56950_DS1.pdf
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FHWA Research and Technology Evaluation: Innovative Intersection Design

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