Innovative Intersection Design

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.

• Record URL:
  https://www.fhwa.dot.gov/publications/research/randt/evaluations/21101/21101.pdf
• Summary URL:
  https://www.fhwa.dot.gov/publications/research/randt/evaluations/21101/index.cfm
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/59932
• Publication Date: 2021-10

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: 3p
• Serial:
  • TechBrief
  • Publisher: Federal Highway Administration
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Highway design; Highway safety; Intersections; Research projects
• Identifier Terms: U.S. Federal Highway Administration
• Subject Areas: Design; Highways; Operations and Traffic Management; Research;

Filing Info

• Accession Number: 01833341
• Record Type: Publication
• Report/Paper Numbers: FHWA-HRT-21-101
• Contract Numbers: HW9AA3
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Jan 21 2022 4:47PM