Paper prepared by:

D.E. Stewart, M.Sc., B.Sc.D.
E. Stewart & Associates, Nepean, Ontario

J. Suggett, M.Sc; B.E.S; B. Ed
Synectics Transportation Consultants Inc.
St. Catharines, Ontario, Canada

One of the main objectives in road safety analysis and evaluation studies is the development of methods for estimating road travel risks for various (groups of) entities under different travel conditions and temporal periods.

The ability to measure and compare the level(s) of road travel risk associated with various factors provides the necessary information required for identifying ‘high risk’ road travel behaviour patterns. Using this knowledge of road travel risks in conjunction with the magnitude of the problem (i.e., accident/injury/fatality frequency) permits the prioritization of the identified problem areas. With this information available, the process of identifying countermeasures or remedial measures for reducing the identified ‘high risk’ road travel behaviour and patterns can be pursued.

This paper presents a general modeling framework for conducting road safety analysis and evaluation studies within the context of an integrated safety management system. Problems are also explored, most notably, dealing with missing information such as the economic costs and benefits of countermeasures or remedial measures. The dilemma in road safety analysis is therefore how to best make an informed decision based on missing information, competing solutions, and constraints in resources. Several suggestions are highlighted.

For a complete copy of this paper, please contact: jsuggett@synectics-inc.net