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Welcome to Chris Bennett's and Lis Pedersen's web site. If you are looking for information Chris' current work on affordable housing, please visit www.mygbhousing.info. The video below tells the background to Chris' project.


2013 - Taiwan - The Study of HDM-4 Applied in Taiwan Area National Freeway Maintenance and Management


2013 - Taiwan - The Study of HDM-4 Applied in Taiwan Area National Freeway Maintenance and Management

Taiwan Highway System experiences successively investment of few decades in government. After the first national highway-Chung Shan, the Second national highway, twelve west to east freeway and western seaside freeway go to operation, the road network is gradually complete. The road engineering changes the style from new construction to maintenance management. In recent years, because the government public construction budget reduce year by year, so road agencies should be emphasizing facilities management and enhancing construction performance that keeping highway transits service quality with the constraints of budget limitations. World Bank carries on a series of project researches to the road in 1968 and develops the related evaluation module. In HDM-4, it provides the extensive module application and explicit method in the stages such as planning, programming, preparation and operation etc. It provides a reference that road agencies carry on related decision. HDM-4 provide user to adjusting with different region parameter such as weather, environment...etc. So this tool can be applicable to more widespread region. When the related pavement maintenance systems are not satisfactory, how to use the international identify tool help Taiwans highway maintenance management. It is very interesting and workable research. We use HDM-4 to collect and analyze Guan-Xi regions Highway No.3 network data, traffic characteristic and cost related information. Through this knowledge, we can adjust the HDM-4s parameter to suit Taiwans condition. Besides, we review technical literature and experts experience to determine on maintenance alternates. We use adjusted mode with real highway budget to determine the threshold of routine and period maintenance. Considering maintenance cost, user cost and highway economy to decide suitable threshold. Finally, base on the best maintenance strategies to explain the relation between maintenance budget and performance. Base on this result, we can determine the budget allotting criteria to reach the biggest economy benefit of the resource.

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Created Date: 26-09-2022
Last Updated Date: 26-09-2022


Chris in the NCT Race 

Chris has an adventurous spirit which generally involves cycling, running, or just being out there having a good time. Read his 'Race Reports' below. This is a link to his SPOT GPS tracker. If you are interested in his 'geeky' sport technical blog it is at www.tri-duffer.com. He also has stories of his life as 'An Overtravelled Engineer Working for the World Bank' at World Bank Traveller.


Race Reports


Document Library


  • Chris' published papers and reports are here.
  • His Technical Library  has a range of reports 
  • Golden Bay community projects are here.
  • The history of the ROMDAS company is here.
  • The 'Road to Good Health' HIV/AIDs Toolkit is here.


Technical Library

Chris and Lis

Chris and Lis

We are Lis Pedersen and Chris Bennett. We’ve been married over 30 years and each found our way to New Zealand in the early 1980s from Denmark and Canada respectively. Golden Bay has been our happy place for almost 20 years and we are now based in Pohara just above the beach, with our two cats Coco and Max. 




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