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Urban Velocity Fields

Author

Listed:
  • S. Angel
  • G.M. Hyman

Abstract

The city is not an undifferentiated terrain and travel does not occur along straight-line paths at constant velocities. Variations in travel velocities at different locations bend the minimum time paths away from regions of high congestion. This paper discusses a transformation of the urban plane into a time surface on which distance corresponds to travel time, and describes the construction of minimum paths and isochrones for various velocity fields. This view of the urban transportation system allows us to discover some of the important features which are often hidden in a network description of the system.

Suggested Citation

  • S. Angel & G.M. Hyman, 1970. "Urban Velocity Fields," Environment and Planning A, , vol. 2(2), pages 211-224, June.
    • Handle: RePEc:sae:envira:v:2:y:1970:i:2:p:211-224
    DOI: 10.1068/a020211
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    Cited by:

    1. Liu, Xintao & Yan, Wai Yeung & Chow, Joseph Y.J., 2015. "Time-geographic relationships between vector fields of activity patterns and transport systems," Journal of Transport Geography, Elsevier, vol. 42(C), pages 22-33.
    2. Xintao Liu & Joseph Y. J. Chow & Songnian Li, 2018. "Online monitoring of local taxi travel momentum and congestion effects using projections of taxi GPS-based vector fields," Journal of Geographical Systems, Springer, vol. 20(3), pages 253-274, July.

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