HDM-4 (Highway Development and Management Model) is a powerful, decision-support software tool designed for the analysis of road infrastructure investment, maintenance, and improvement strategies. Developed under the auspices of the World Road Association (PIARC) and the World Bank, HDM-4 enables engineers, planners, and policymakers to evaluate the technical, economic, environmental, and social impacts of road projects. It is widely recognized as the international standard for road asset management and investment appraisal.
system remains a cornerstone for road investment decisions. Developed by the World Road Association (PIARC) and maintained by hdm-4 software
Scope: Focuses on the prioritization of a defined list of candidate road projects into a multi-year rolling work program. Comprehensive Report on HDM-4 Software 1
A more recent application paper (2022) that demonstrates how to use the software to predict impacts on rural road networks. It is widely recognized as the international standard