METHODS TO SIMPLIFY NETWORK REPRESENTATION IN TRANSPORTATION PLANNING

The problem of Network Aggregation is defined as the simplification of the number of nodes and links in a transportation network. The objective of a network aggregation technique is to reproduce the level-of-service attributes (such as travel time) between any two points using a spider network as a proxy for the detailed. The aggregation procedure categorizes links into functional groups such as access, egress, line-haul, bypass and intra zonal circulation--which is a convenient classification in terms of transportation analysis. The technique presented has several distinguishing advantages. First, certain invariance properties are maintained--for example the total trip miles of travel is the same whether measured in the aggregate or detailed networks. Second, the method is systematic, rather than judgemental, which means the inaccuracies introduced as a result of network aggregation can be measured in a scientific way.

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Chan, Y
• Publication Date: 1976-6

Media Info

• Features: References;
• Pagination: p. 179-191
• Serial:
  • Transportation Research /UK/
  • Volume: 10
  • Issue Number: 3
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Network analysis (Planning); Operations; Planning; Transportation planning; Urban transportation
• Old TRIS Terms: Operations planning
• Subject Areas: Administration and Management; Data and Information Technology; Operations and Traffic Management; Planning and Forecasting; Public Transportation; Railroads;

Filing Info

• Accession Number: 00142317
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Analytic
• Files: TRIS
• Created Date: Dec 15 1981 12:00AM