USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
TFHRC Logo
Office of Research, Development and Technology at the Turner-Fairbanks Highway Research Center

Innovative Intersection Design

FHWA-HRT-21-101.pdf (669.71 KB)

Publication Information

Publication Type:
TechBrief
Publication Number:
FHWA-HRT-21-101
Abstract:

This brief summarizes an evaluation of the Federal Highway Administration’s (FHWA’s) Innovative Intersection Design (IID) program. FHWA’s IID research and development (R&D) includes diverging diamond interchanges (DDIs), restricted crossing U-turns (RCUTs), displaced left turns (DLTs), median U-turns (MUTs), and mini-roundabouts.


The purpose of the evaluation was to assess the effects of FHWA’s investment in IID research on the availability and quality of such research, the adoption of IIDs in the United States, and the impact of those intersections on safety and operational performance

 

 

Recommended citation: Federal Highway Administration, Innovation Intersection Design (Washington, DC: 2021) https://doi.org/10.21949/1521683

Publishing Date:
October 2021
Digital Object Identifier:
https://doi.org/10.21949/1521683
Author(s):
Huie, Mary
FHWA Program(s):
Research
Corporate
AMRP Program(s):
Research Infrastructure, Technology Transfer, and Partnerships
FHWA Activities:
Intersections
Subject Area:
Research