01556588

Component

This paper presents a new method to evaluate bicycle infrastructure plans in terms of exposure to dangerous situations. Central to the new method is a typology of 23 dangerous situations for bicyclists that were identified through a literature review. The first step of the analysis is to define exposure indicators for these dangerous situations. Example indicators are presented for 12 situations. In practice, a community should define their own indicators based on public input, local circumstance, and current research. Next, the analyst can assess dangerous situation exposure for proposed bicycle improvement scenarios using a GIS tool created for this project. The results from the tool provide a means to compare projects and communicate the impact of infrastructure investments. For example, the proposed bicycle master plan for the case study would decrease the exposure indicator for cycling in hazardous conditions by 55% and decrease the exposure indicator for the right hook situation by 7%, but increase the exposure indicator for cycling along streets with frequent access points by 4%. Engineers and planners can use the tool and process presented in this paper to help improve safety for bicyclists.

This paper was sponsored by TRB committee ANB20 Safety Data, Analysis and Evaluation.

01550057

15-5989

English

16p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Maps; References; Tables

Bicycle crashes; Bicycling; Case studies; Crash causes; Crash exposure; Hazard analysis; Master plans; Traffic safety

Bellingham (Washington)

Pedestrians and Bicyclists; Planning and Forecasting; Safety and Human Factors; I82: Accidents and Transport Infrastructure

Transportation Research Board Annual Meeting 2015 Paper #15-5989

TRIS, TRB, ATRI

Dec 30 2014 2:00PM