WHEN YOU CAN'T MODEL - TRAFFIC IMPACT STUDY METHODS CAN BE USED AT THE METROPOLITAN REGIONAL LEVEL

This paper presents the results of a study for the Nanaimo Parkway, presently under construction west of the City of Nanaimo, B.C., where travel demand forecasts for a four-lane expressway was required. The methodology selected to determine the amount of existing traffic diverted to the new expressway was to apply diversion percentages determined from an out-of-date transportation model, in lieu of having Origin and Destination (O&D) data. Both existing and future traffic volumes were categorized as "through", "ferry" and "local". The method for forecasting future through traffic was a combination of a trend analysis and expert opinion from the tourism industry. For future ferry traffic, O&D studies and information on BC Ferries' planned schedules, ferry sizes and their unloading rates, were used in combination with a platoon decay function to estimate future ferry generated traffic along the entire length of the Parkway.

Language

  • English

Media Info

  • Features: Figures; Tables;
  • Pagination: v.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00720514
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Apr 15 1996 12:00AM