Wednesday, February 15, 2017
HDM4
HDM4 (by Henry Kerali)
The Highway Development and Management Tools collectively referred to as HDM-4, is the
successor to the World Bank Highway Design and Maintenance Standards Model (HDM-III).
The scope of the new HDM-4 tools have been broadened considerably beyond traditional
project appraisals, to provide a powerful system for the analysis of road management and
investment alternatives. In addition to updating the HDM-III technical relationships for vehicle
operating costs, and pavement deterioration for flexible and unsealed pavements, new technical
relationships have been introduced to model rigid concrete pavement deterioration, accident
costs, traffic congestion, energy consumption and environmental effects. The HDM-4
incorporates three dedicated applications tools for project level analysis, road work
programming under constrained budgets, and for strategic planning of long term network
performance and expenditure needs. It is designed to be used as a decision support tool within a
road management system. Standard data import and export facilities are provided for linking
HDM-4 to various database management systems. Local adaptation and calibration of HDM-4
models can be achieved by specifying default data sets that represent pavement performance
and vehicle resource consumption in the country where the model is being used.
The Highway Development and Management Tools collectively referred to as HDM-4, is the
successor to the World Bank Highway Design and Maintenance Standards Model (HDM-III).
The scope of the new HDM-4 tools have been broadened considerably beyond traditional
project appraisals, to provide a powerful system for the analysis of road management and
investment alternatives. In addition to updating the HDM-III technical relationships for vehicle
operating costs, and pavement deterioration for flexible and unsealed pavements, new technical
relationships have been introduced to model rigid concrete pavement deterioration, accident
costs, traffic congestion, energy consumption and environmental effects. The HDM-4
incorporates three dedicated applications tools for project level analysis, road work
programming under constrained budgets, and for strategic planning of long term network
performance and expenditure needs. It is designed to be used as a decision support tool within a
road management system. Standard data import and export facilities are provided for linking
HDM-4 to various database management systems. Local adaptation and calibration of HDM-4
models can be achieved by specifying default data sets that represent pavement performance
and vehicle resource consumption in the country where the model is being used.
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