RSA Peer-to-Peer Assistance

A road safety audit (RSA) proactively examines the safety performance of an existing or future road or intersection. RSAs are conducted by an independent multidisciplinary team and can be used during any phase of project development as well as on any size project. Technical or procedural...

Background Report: Guidance for Roadway Safety Data to Support the Highway Safety Improvement Program

Traffic Calming ePrimer – Module 3

Toolbox of Individual Traffic Calming Measures

For each of the traffic calming measures covered in this ePrimer, the following four sections are provided:

1. A description of the measure and its general purpose,
2. An overview of the setting where each...

Traffic Calming ePrimer – Module 2

Traffic Calming Basics

2.1 Traffic Calming Definition

Definitions of traffic calming have varied from publication to publication over the years. The following "definition," which has been developed by FHWA and ITE for this ePrimer, is a robust description...

Traffic Calming ePrimer – Module 1

 Purpose and Organization of ePrimer

1.1 What is the Traffic Calming ePrimer?

The Federal Highway Administration (FHWA) and the Institute of Transportation Engineers (ITE) have collaborated to produce this Traffic Calming ePrimer. It documents the...

Traffic Calming ePrimer – Module 7

Traffic Calming Programs and Planning Processes

A formal traffic calming program or process is a common component of the transportation services in many jurisdictions. An agency looking to develop a new–or refine an existing–traffic calming program, can learn from a review of...

Traffic Calming ePrimer – Module 8

Traffic Calming Case Studies

The following five case studies cover both (1) effective processes used to plan and define a local traffic calming program or project and (2) assessments of the effects of individual and series of traffic calming measures. A brief summary is...

Traffic Calming ePrimer – Module 6

 EFFECTS of Traffic Calming Measures on Non-Motorized Users

Traffic calming can affect non-motorized users, defined as bicyclists and pedestrians. The following sections discuss these qualitative and quantitative effects. An understanding of how a traffic...

Traffic Calming ePrimer – Module 5

5.1 Definition of Non-Personal Passenger Vehicles

Traffic calming measures affect motorist behavior. The effects may be different for a personal passenger vehicle than for a non-personal passenger vehicle. The implications of the effects certainly differ between a personal...

Traffic Calming ePrimer – Module 4

Effects of Traffic Calming Measures on Motor Vehicle Speed and Volume

A traffic calming measure can cause a reduction in average vehicle speed or in the range of speeds observed (i.e., eliminate or reduce very high vehicle speeds). The speed reduction could result in...