The effects of pedestrian and bicycle exposure on crash risk in Minneapolis

Title

The effects of pedestrian and bicycle exposure on crash risk in Minneapolis

Published Date

2021

Publisher

Journal of Transport and Land Use

Type

Article

Abstract

Exposure to risk is a theoretically important correlate of crash risk, but many safety performance functions (SPFs) for pedestrian and bicycle traffic have yet to include the mode-specific measures of exposure. When SPFs are used in the systematic approach to assess network-wide crash risk, the omission of the exposure potentially could affect the identification of high-risk locations. Using crash data from Minneapolis, this study constructs and compares two sets of SPFs, one with pedestrian and bicycle exposure variables and the other without, for network-wide intersection and mid-block crash models. Inclusion of mode-specific exposure variables improves model validity and measures of goodness-of-fit and increases accuracy of predictions of pedestrian and bicycle crash risk. Including these exposure variables in the SPFs changes the distribution of high-risk locations, including the proportion of high-risk locations in low-income and racially concentrated areas. These results confirm the importance of incorporating exposure measures within SPFs and the need for pedestrian and bicycle monitoring programs to generate exposure data.

Description

Related to

Replaces

License

Series/Report Number

Funding information

Isbn identifier

Doi identifier

10.5198/jtlu.2021.1980

Previously Published Citation

Suggested citation

Tao, Tao; Lindsey, Greg; Cao, Jason; Wang, Jueyu. (2021). The effects of pedestrian and bicycle exposure on crash risk in Minneapolis. Retrieved from the University Digital Conservancy, 10.5198/jtlu.2021.1980.

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