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.
Thursday, January 1, 2009
About me and my blog
Hi,I'm Azhar. I'm a road engineer here in Malaysia. I thought about doing a blog to share knowledge on road engineering. I intended to this after many of juniors who are still studying at university asked me what the I do. I thought it would be a good a way spread knowledge on the field for students choose the right career after studying.
Other than students, I hope create professional contacts and networks as well especially from outside my own country, to share knowledge and experience. Happy new year.
Other than students, I hope create professional contacts and networks as well especially from outside my own country, to share knowledge and experience. Happy new year.
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