The primary objective of the literature review is to understand the safety performance of bicycle infrastructure (including both bicycle facilities along roadways and bicycle intersection treatments) in terms of both actual safety and perceived safety. Specifically, the review attempts to understand:
(1) best practices for measuring safety performance of bicycle facilities;
(2) related data requirements and safety performance heuristics;
(3) bicycle crash trends; and (4) the actual and perceived safety performance of bicycle infrastructure.
This section outlines the scope and approach of the literature review.
The Transportation Research Information Database (TRID) was used to conduct a comprehensive search for relevant literature published internationally in the last 10 years. TRID is a database of research and studies that includes the Transportation Research Information Services (TRIS) Database and the Office of Economic Cooperation and Development (OECD) Joint Transport Research Centre’s International Transport Research Documentation (ITRD) Database. TRID contains over one million records of transportation research worldwide. Results from this search identified approximately 438 documents using broad search criteria. These documents are sourced from: (1) engineering and scientific periodicals and journals; (2) conference proceedings; and (3) readily available government and industry reports.
The abstracts of the initial 438 search documents were reviewed for relevancy and 153 were selected for further review and potential inclusion in this literature review summary document. Almost three quarters of the literature were published in per-review journals while others were typically conference proceedings and reports. Almost half of the literature were conducted in the U.S., over one-quarter were conducted in Canada and over 10% were conducted in Europe.