SOME GENERALIZATIONS AND APPLICATIONS OF THE VELOCITY FIELD CONCEPT: TRIP PATTERNS IN IDEALIZED CITIES

This paper discusses the velocity field concept and seeks to extend its descriptive power by introducing the continuous analogue of the traditional link speed-flow relations used in transportation studies. By solving the resulting velocity field equations self-consistently in terms of land use and socio-economic factors, and various policy variables, the profile of this field, which reflects the spatial distribution of congestion in an urban area, may be found. The velocity field is computed in a circular city with a single ring road in order to identify its optimal radius. Car parking and public transport "no fares" policies are also considered to illustrate various aspects of our approach. (A)

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Williams, HCWL
  • Ortazars, HCWL
• Publication Date: 1976-4

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 65-73
• Serial:
  • Transportation Research /UK/
  • Volume: 10
  • Issue Number: 2
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Free fares; Land use; Parking; Public transit; Socioeconomic factors; Traffic distribution; Urban areas; Velocity
• Old TRIS Terms: Free transportation
• ITRD Terms: 632: Congestion (traffic); 251: Free (no charge); 698: Journey; 356: Land use; 6473: Mathematical model; 955: Parking; 744: Public transport; 5408: Speed; 671: Traffic flow; 313: Urban area
• Subject Areas: Economics; Highways; Operations and Traffic Management; Public Transportation; Society;

Filing Info

• Accession Number: 00138979
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 3 1981 12:00AM