Network screening for road safety can be based on either collision records or physical attribute data. This paper presents an exploratory analysis of methodologies developed by the International Road Assessment Program (iRAP) that apply these two general approaches to road safety network screening. There is interest in exploring the Road Assessment Program (RAP) through a case study in Manitoba to understand its usefulness and customization requirements for the specific needs within the Canadian Prairie Region. Risk mapping uses historical collision records while star rating mapping uses physical attribute data. The research leading to this paper had four objectives: (1) synthesize strengths and weaknesses of the RAP according to a jurisdictional survey; (2) investigate constraints and availability of required data and resources in terms of information, level of effort, funding and equipment; (3) analyze the RAP methodology by applying it to part of the National Highway System (NHS) in Manitoba; and (4) explore the usefulness of the program for application in the Canadian Prairie Region, and possibly beyond. The risk mapping methodology was found to be an effective road safety network screening process when required data is available; however, adaptations for the prairie context are necessary. Regarding the star rating aspect of the analysis, although it can be helpful, the aggregate nature of the results does not utilize the potential of the data collected. Details from the program developers on the technical rationale underlying the star rating methodology as well as processes to present results in a disaggregated form would enhance the usefulness of this approach.