iRAP Crash Risk Mapping is built on the philosophy of network safety management, where safety improvement programmes are used alongside other approaches such as analysis at high-risk single sites. iRAP advocates the use of economically viable mass action programmes focusing on route safety as opposed to often lower cost improvements at spot locations.

Crash Risk Maps are colour-coded maps showing the crash risk on individual routes across a road network. They provide various insights to risk for different audiences. For road users, crash risk maps demonstrate how risk can change across a network, leading to a better understanding and awareness of why some roads are safer than others. For road providers and operators, crash risk maps, when used alongside existing approaches, can help in setting realistic targets for safety improvements.