What is the Road Safety Calculator
The Road Safety Calculator is a tool for road safety policymakers to make informed decisions on planning road safety investments.
The current version of the calculator (late-2024) incorporates interventions covering all pillars of road safety (except Vehicle Safety) and is designed to help decisionmakers select the most effective road safety strategies for the road safety issues faced by their countries and jurisdictions. The Calculator prompts users to input data on current road safety status, (including road use, and behavior, etc.), which is then used to provide estimates of benefits in terms of reductions in fatalities and serious injuries, given a road safety intervention is selected and implemented.
For this purpose, road crash fatality and injury profiles are used along with Casualty Modification Factors derived through systematic reviews (see this document for the methodology behind the calculations).
This version of Road Safety Calculator covers 10 road safety intervention areas:
- Increase Helmet Use with [strict] enforcement
- Increase Seatbelt Use with [strict] enforcement
- Reduce alcohol-involved casualties
- Install sidewalks along both sides of urban arterial corridors
- Convert uncontrolled intersections to controlled
- Provide comprehensive centerline crossover protection on two-lane high speed roads
- Provide comprehensive run-off-road protection (clear zones and barriers) on high speed roadways
- Reduce speed limits and increase enforcement on high speed roads
- Implement traffic calming treatments on residential collector streets
- Improve post-crash emergency care services.