Fact sheets on iRAP methodology and Road Attribute Risk Factors describing the iRAP approach, covering topics such as crash types, Star Rating Score equations, model calibration, estimation of economic benefits and costs and risk factors used in the models are available for reference. The ‘iRAP Methodology’ fact sheets describe the Star Rating and Safer Roads Investment Plan methodologies, while the ‘iRAP Road Attribute Risk Factors’ fact sheets describe the risk factors used in the models. Methodology and Road Attribute Risk Factor fact sheets are available at https://www.irap.org/methodology/
Specification, manuals and guidelines for planning, management, performing iRAP survey, data coding, analysis etc. of an iRAP road assessment is available for reference. Specification documents and standard templates are available at http://www.irap.org/specifications/
