– Create a "Works Program" linking treatments to trigger conditions (e.g., “If IRI > 5 m/km, apply thin overlay”).
Unlike basic spreadsheet calculators, HDM-4 is a sophisticated simulation model that quantifies the physical, economic, and environmental consequences of road works over the lifecycle of a pavement. hdm-4 software
This module is used for long-term planning (usually 10–20 years). It helps agencies determine funding needs at a network level. – Create a "Works Program" linking treatments to
Modern versions include modules to estimate CO2 emissions and other environmental externalities. Why is HDM-4 Important? Evidence-Based Budgeting It helps agencies determine funding needs at a network level
Applying the HDM-4 Model to Strategic Planning of Road Works
It provides a modern look at how HDM-4 supports decision-making for the economic and social viability of project proposals. Key Uses of HDM-4 Software
The result was the , released in the 1980s. It was a DOS-based tool that revolutionized economic appraisal. However, by the early 1990s, the world had changed. The limitations of DOS were apparent, and the need for a Windows-based, more sophisticated system was urgent.