Advancement of the annual traffic census in Hong Kong

Hing Keung William Lam, W. T. Hung, Hong K. Lo, H. P. Lo, C. O. Tong, S. C. Wong, Hai Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


This paper summarises the process, findings and recommendations of a recently completed joint university consultancy project that reviewed the annual traffic census (ATC) in Hong Kong. The results of a survey that assessed the usefulness of the census report are presented, together with an overview of the existing traffic data collection process and traffic detection equipment. Areas for improvement are then identified, including the sampling strategies for the collection of vehicle classification and occupancy data, the procedure for the development of group scaling factors, the method for the selection of core and coverage stations, the approaches to developing growth factors and traffic flow estimation, the presentation method and database structure of the census framework, and the manpower requirements. Based on these identified areas, a new computer program is developed to integrate all of the tasks of the census report and to produce the results in CD-ROM format. Finally, concluding remarks are given together with recommendations for further study.
Original languageEnglish
Pages (from-to)103-115
Number of pages13
JournalProceedings of the Institution of Civil Engineers: Transport
Issue number2
Publication statusPublished - 1 Jan 2003


  • Traffic engineering
  • Transport planning

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Transportation

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