Conducting economic feasibility studies for specific road projects, comparing different design or maintenance alternatives.

The software models distress types including cracking (alligator, longitudinal), rutting, ravelling, potholing, and roughness (IRI – International Roughness Index). The fundamental output here is progression curves —how IRI increases over time without intervention.

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Estimates changes in accident rates and environmental pollution.

This tool is designed for managing a network of roads within limited budget constraints. It helps officials prioritize projects, determining which road sections need immediate intervention and which can wait, ensuring the best use of available funds over a 1–10 year horizon. 3. Strategy Analysis

When evaluating scenarios, HDM-4 generates rigorous economic outputs required by international financial institutions (like the World Bank, Asian Development Bank, and African Development Bank) to approve loans:

– Set up a new database and create a "section" (a homogeneous road segment, e.g., km 0–5.5).