FHWA: Making Our Roads Safer One Countermeasure at a Time

https://safety.fhwa.dot.gov/ provencountermeasures. BEFORE AFTER Before and afer photos of a Road Diet project. Source: City of Orlando, Florida PEDESTRIAN/BICYCLES | PROVEN SAFETY COUNTERMEASURES 16. Road Diets (Roadway Reconfiguration) A “Road Diet,” or roadway reconfiguration, can improve safety, calmtrafic, provide bettermobility and access for all road users, and enhance overall quality of life. SAFETY BENEFIT: 4-LANE  3-LANE ROAD DIET CONVERSIONS 19-47% Reduction in total crashes Source: Evaluation of Lane Reduction“Road Diet” Measures on Crashes, FHWA-HRT-10-053. A Road Diet typically involves converting an existing four-lane undivided roadway to a three-lane roadway consisting of two through lanes and a center two-way lef-turn lane (TWLTL). Benefits of Road Diet installations may include: ƒ An overall crash reduction of 19 to 47 percent. ƒ Reduction of rear-end and lef-turn crashes due to the dedicated lef- turn lane. ƒ Reduced right-angle crashes as side street motorists cross three versus four travel lanes. ƒ Fewer lanes for pedestrians to cross. ƒ Opportunity to install pedestrian refuge islands, bicycle lanes, on- street parking, or transit stops. ƒ Trafic calming and more consistent speeds. ƒ A more community-focused, “Complete Streets” environment that better accommodates the needs of all road users. A Road Diet can be a low-cost safety solution when planned in conjunction with a simple pavement overlay, and the reconfiguration can be accomplished at no additional cost. Road Diet project in Honolulu, Hawaii. Source: Leidos

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