Comment:
This section details post-implementation evaluation processes to measure Road Diet performance. Several evaluations exist for determining the effect a Road Diet has on safety, operations, non-motorized transportation modes, and transit.

Last Updated (Year): 2014

Year Produced: 2014

Abstract:

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.

For:Walking, Biking

The E's:Evaluation, Engineering

Ped Bike Activity:

• Planning
• Design
• Assessment

Ped Bike Topic:

• Traffic Calming
• Traffic Assessment
• Safety
• Road Diet
• Retrofit
• Design
• Countermeasures
• Community Action
• Case Study
• Assessment

Resource Type:

• Guidance

Link to Content Source:

Road Diet Informational Guide