Road Diet Informational Guide
A classic Road Diet converts an existing four-lane undivided roadway segment to a three-lane segment consisting of two through lanes and a center two-way left turn lane (TWLTL). A Road Diet improves safety by including a protected left-turn lane for mid-block left-turning motorists, reducing crossing distance for pedestrians, and reducing travel speeds that decrease crash severity. Additionally, the Road Diet provides an opportunity to allocate excess roadway width to other purposes, including bicycle lanes, on-street parking, or transit stops. This Informational Guide includes safety, operational, and quality of life considerations from research and practice, and guides readers through the decision-making process to determine if Road Diets are a good fit for a certain corridor. It also provides design guidance and encourages post-implementation evaluation.
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- Record URL:
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Corporate Authors:
Leidos
11251 Roger Bacon Drive
Reston, VA United States 20190Federal Highway Administration
Office of Safety, 1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Knapp, Keith
- Chandler, Brian
- Atkinson, Jennifer
- Welch, Thomas
- Rigdon, Heather
- Retting, Richard
- Meekins, Stacey
- Widstrand, Eric
- Porter, R J
- Publication Date: 2014-11
Language
- English
Media Info
- Media Type: Digital/other
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 72p
Subject/Index Terms
- TRT Terms: Bicycle lanes; Bus stops; Decision making; Guidelines; Highway design; Highway safety; On street parking; State of the practice; Three lane highways; Two way left turn lanes
- Uncontrolled Terms: Road diet
- Subject Areas: Design; Highways; I21: Planning of Transport Infrastructure;
Filing Info
- Accession Number: 01563670
- Record Type: Publication
- Report/Paper Numbers: FHWA-SA-14-028
- Contract Numbers: DTFH61-10-D-00024, Task Order No. T-12-004
- Files: NTL, TRIS, ATRI, USDOT
- Created Date: May 20 2015 12:18PM