Site Selection Process and Methodology for Deployment of Intersection Safety Cameras in British Columbia, Canada

Abstract

The Intersection Safety Camera Program (ISCP) in British Columbia, Canada, has proved effective in reducing the frequency of collisions at locations where intersection safety cameras (red light cameras) have been deployed. Postimplementation evaluations of ISCP conducted by the Insurance Corporation of British Columbia detected a 14% reduction in collisions resulting in injuries 18 months after the program was implemented. A follow-up study conducted 36 months after ISCP implementation examined the safety performance of ISCP and found that the rate of collisions resulting in injuries was reduced by 6.4%. Given the ongoing and long-term success of ISCP at reducing collisions, it was decided that the program should be expanded. To support ISCP expansion, it was necessary to examine how the program had been implemented and to learn from the results of the previous program evaluations. A critical element of ISCP is the selection of sites to be targeted for deployment of intersection safety cameras. The sites selected should have a demonstrated safety problem, such that the site will offer significant potential for improvement after an intersection safety camera has been installed. In addition, sites should be selected such that the life-cycle cost of deployment of the intersection safety camera will be less than the safety benefits that will accrue from reduced numbers of collisions and the associated costs. This paper presents the process and methodology that were used to select candidate sites for the deployment of an expanded ISCP in British Columbia.

Identifying Optimal Locations for Speed Enforcement Cameras

“…Another study developed a prediction model to forecast crashes by severity to assist in defining the optimum sites for speed cameras enforcement ( 39 ). Also, optimization techniques such as genetic algorithms were used to select locations for speed cameras based on the minimum cost of setting up and maintaining the speed control device and the minimum cost of predicted crashes ( 40 ).…”

A Predictive Framework of Speed Camera Locations for Road Safety

“…Moreover, other types of ASE systems have also been studied. For example, a paper (De Leur & Milner, 2011) introduces a methodology for selecting good Intersection Safety Camera sites in British Columbia. The methodology is based on factors reflecting the potential of improvement of a site as well as the cost of deployment of the intersection safety camera.…”

“…Many ASE programs usually evaluate the impact of speed cameras by the frequency of collisions or crash severity on the controlled sections (De Leur & Milner, 2011;Hess, 2004). Other programs move towards evaluating the effectiveness of speed cameras by assessing the evolution of vehicle average speeds at the camera location (De Pauw, Daniels, Brijs, Hermans, & Wets, 2014; Kang, 2002).…”

“…reduction of average speed. Existing works formalize this problem as an operation research problem (De Leur & Milner, 2011;Boscoe-Wallace, 2017;Ko, Geedipally & Walden, 2013). However, in the best of our knowledge, few works dive into finding the best speed camera sites based on data-driven approach.…”