HDM-4 exports detailed tables and graphs showing:
Scenario: A 50 km unpaved road in a developing country with 200 vehicles/day (20% heavy trucks). Annual rainfall 1200 mm. Current IRI = 12 m/km.
Alternatives:
HDM-4 analysis steps:
Typical result: Option B yields EIRR = 28% (good); Option A yields EIRR = 12% (borderline, only if traffic grows). HDM-4 helps reject the over-design (paving) in favor of optimal regravelling.
| Software | Focus | Integration with HDM-4 |
|----------|-------|------------------------|
| dTIMS (Deighton Total Infrastructure Management System) | Network-level optimization | Can import HDM-4 deterioration models |
| RoadAssist (World Bank) | Simplified project appraisal | Lighter version of HDM-4 principles |
| Pavement LCCA (FHWA) | Lifecycle cost only | Less comprehensive than HDM-4 |
| VOC Tools (PIARC) | Vehicle operating costs only | Used as a sub-module within HDM-4 |
When mining or logging companies request permits for abnormal loads, HDM-4 can model accelerated pavement damage. The software calculates the “equivalent damage factor” of a 5-axle dump truck, allowing agencies to levy road user charges accurately.
To understand the power of HDM-4 software, one must look at its architectural structure. The software is divided into specific modules that mimic the real-world workflow of road management:
Hdm-4 Software
HDM-4 exports detailed tables and graphs showing:
Scenario: A 50 km unpaved road in a developing country with 200 vehicles/day (20% heavy trucks). Annual rainfall 1200 mm. Current IRI = 12 m/km.
Alternatives:
HDM-4 analysis steps:
Typical result: Option B yields EIRR = 28% (good); Option A yields EIRR = 12% (borderline, only if traffic grows). HDM-4 helps reject the over-design (paving) in favor of optimal regravelling.
| Software | Focus | Integration with HDM-4 |
|----------|-------|------------------------|
| dTIMS (Deighton Total Infrastructure Management System) | Network-level optimization | Can import HDM-4 deterioration models |
| RoadAssist (World Bank) | Simplified project appraisal | Lighter version of HDM-4 principles |
| Pavement LCCA (FHWA) | Lifecycle cost only | Less comprehensive than HDM-4 |
| VOC Tools (PIARC) | Vehicle operating costs only | Used as a sub-module within HDM-4 |
When mining or logging companies request permits for abnormal loads, HDM-4 can model accelerated pavement damage. The software calculates the “equivalent damage factor” of a 5-axle dump truck, allowing agencies to levy road user charges accurately.
To understand the power of HDM-4 software, one must look at its architectural structure. The software is divided into specific modules that mimic the real-world workflow of road management: