A resource optimization framework for improving railway-highway grade crossing safety in Canada

Author:

Thakali Lalita1,Fu Liping12,Heydari Shahram3

Affiliation:

1. Department of Civil & Environmental Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.

2. Intelligent Transportation Systems Research Centre, Wuhan University of Technology, Wuhan, Hubei 430000, China.

3. Department of Civil, Maritime and Environmental Engineering, University of Southampton, Southampton, UK.

Abstract

This paper presents a new approach to address the problem of allocating federal resources and identifying upgrading projects for improving the safety of at-grade crossings in Canada. The proposed approach is unique in two key aspects. First, a risk-based network screening process is adopted to identify the priority sites for providing a justifiable basis for distributing the total budget at a regional level as well as narrowing the search space in the subject optimization step. Secondly, a mathematical programming approach is applied to formalize the resource allocation process with explicit consideration of the expected benefits – risk reduction and the costs of implementing the projects. This approach is expected to improve the process of identifying the optimal set of upgrading projects within each region, thus maximizing the return on investment. A full-scale case study from the Canadian crossing network is conducted to demonstrate the application of the proposed approach.

Publisher

Canadian Science Publishing

Subject

General Environmental Science,Civil and Structural Engineering

Reference12 articles.

1. Optimization of Highway Safety and Operation by Using Crash Prediction Models with Accident Modification Factors

2. Farr, E.H. 1987. Rail-highway crossing resource allocation procedure – user’s Guide. 3rd ed. U.S. Department of Transportation, Federal Railroad Administration, Washington, DC.

3. Fu, L., Heydari, S., and Thakali, L. 2016. Improvement and development of collision risk and treatment effectiveness models for GradeX. Submitted to Transport Canada.

4. Systemwide Optimization of Safety Improvements for Resurfacing, Restoration, or Rehabilitation Projects

5. Hauer, E. 1997. Observational before/after studies in road safety: estimating the effect of highway and traffic engineering measures on road safety. Pergamon.

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