Pedestrian & Bicycle Safety Performance Functions
NCHRP's "Pedestrian & Bicycle Safety Performance Functions" helps develop pedestrian and bicycle safety performance functions (SPFs) for transportation practitioners at all levels to better inform planning, design, and operations decisions.
Each year, national crash studies have estimated that while overall traffic fatalities are decreasing, the percentages of those fatalities among pedestrians and cyclists are increasing. FHWA estimates pedestrian and bicyclist fatalities comprise about 19% of all traffic fatalities, with approximately 6,000 pedestrian deaths and 850 bicyclist deaths annually.
Pedestrian & Bicycle Safety Performance Functions presents state DOTs and other transportation professionals with an update of pedestrian and bicycle SPFs. This report will be of immediate interest to design and transportation planning engineers.
Read the full report here
Who is NCHRP?
The National Cooperative Highway Research Program conducts research in problem areas that affect highway planning, design, construction, operation, and maintenance in the United States.
Administered under the Transportation Research Board (TRB), NCHRP is a collaborative effort between the Federal Highway Administration (FHWA) and the National Academy of Sciences.
Safety Performance Function
SPFs are equations used to predict the average number of crashes per year at a particular location as a function of exposure and roadway or intersection characteristics like number of lanes, traffic control, or median type.
SPFs are used to predict the crash frequency for a given set of site conditions, either alone or in combination with crash history to evaluate the safety performance of a specific site under various conditions.
