U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
The Ohio Local Technical Assistance Program (LTAP) developed this online Road Diet learning program. The course has several learning objectives: learn what a Road Diet is and how the definition includes many different roadway designs, understand why Road Diets are an important safety improvement, learn the various types of roadway users that can benefit from Road Diets and how to analyze the impacts of Road Diet implementations.
This 1.5-hour webinar focused on policies relating to the implementation of Road Diets. In addition to developing a stand-alone Road Diet policy, agencies can also integrate Road Diets within existing policies and safety plans: https://connectdot.connectsolutions.com/p1ve0v0w90s/
Road Diets can improve roadway conditions near areas children frequent, like schools and parks. In these locations, safety can be drastically improved for motorists by calming traffic and improving the line of sight for children and drivers alike.
The Road Diet Myth Busters Capacity Flyer debunks the myth that Road Diets reduce capacity. In many cases, Road Diets have no effect on motor-vehicle capacity and often improve the level of service (LOS) for pedestrians and bicyclists. The flyer provides high-level guidance on how to anticipate and mitigate impacts to motor-vehicle operations.
Setting appropriate speed limits is an essential element of highway safety. A rationally determined speed limit is one that is safe, considered appropriate by most drivers, and enforceable. USLIMITS2 provides a fact-based set of decision rules to determine an appropriate speed limit for a specific roadway segment. USLIMITS2 is a user-friendly and logical web-based tool designed to help practitioners set credible, consistent, and enforceable speed limits. As such, USLIMITS2 is a useful tool for road diet applications. USLIMITS2 can be used for a speed study to check if existing speed limit was set appropriately and identify speeding related safety problems when managing speed is one of the purposes for a road diet application. In addition, USLIMITS2 can be used to examine if a different speed limit should be applied after road diet is done.
The Road Diet Desk Reference is a resource to assist transportation agencies during their decision-making process in regards to considering, implementing, and evaluating Road Diet conversions. The information in the document is derived from the Road Diet Informational Guide.
The Road Diet Brochure describes Road Diets and explains why and by how much they can improve safety. It is a three-fold, front and back, outreach product that can be used as a handed out.
The Road Diet Presentation introduces the Road Diet Informational Guide and provides an overview of Road Diets. It also includes a Road Diet Case Study in Florida.
The Road Diet Presentation Webinar Recording is the Adobe Connect recording of the above Road Diet presentation.
The "Going on a Road Diet" article was published in the September/October 2011 Public Roads magazine. It provides an overview of Road Diets and their benefits. It also covers multiple case studies including Edgewater Drive in Orlando, FL and Stone Way North in Seattle, WA.
This research paper compares CMF values produced by the more common empirical Bayes method to the more complicated full Bayes method. The study uses road segments that were converted from a four-lane to a three-lane cross-section with a two-way left-turn lane.
This study developed a CMF for converting 4-lane undivided roads to 2-lanes with a center two-way left-turn lane (TWLTL).
This study developed a CMF for converting 4-lane undivided roads to 2-lanes with a central two-way left-turn lane (TWLTL) in Minnesota. Using multiple years of before and after data from each site, several statistical analyses were performed using both Empirical Bayes and Grouped Comparison procedures.