AN ACTIVITY MODEL: A DEMAND MODEL FOR TRANSPORTATION

An activity model in an urban area is investigated to form the basis for the development of a demand model for transportation planning. As suggested by Chapin, a transportation activity is the off-spring of the evolutionary processes involving motivation-choice-activity and optimization processes. Following his hypothesis about activities, we have developed an activity model which might be applicable to transportation planning. Using the analogy of transportation systems on queueing models, a representation of transportation and activity systems by serial queues is investigated in urban and surburban areas. In this model time required for transportation and various activities are assumed as the key factors to determine the number of trips for users within the area. A newly conceptualized cost-effectiveness function is used to obtain optimal trip patterns of users in these areas. Maximizing this function, an optimal visiting rate is calculated for any specification of transportation and activity time. Some realistic examples are depicted to illustrate this model and good insights into trip patterns are obtained for a variety of trips from 20 min to many hours duration. (A) /TRRL/

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Kobayashi, K
• Publication Date: 1976-4

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 105-110
• Serial:
  • Transportation Research /UK/
  • Volume: 10
  • Issue Number: 2
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Cost effectiveness; Demand; Queuing theory; Suburbs; Transportation; Transportation planning; Travel patterns; Trip length; Urban areas
• Uncontrolled Terms: Activity models; Transportation systems
• Old TRIS Terms: Queueing theory
• ITRD Terms: 285: Demand (econ); 6473: Mathematical model; 6594: Queue; 313: Urban area
• Subject Areas: Administration and Management; Transportation (General);

Filing Info

• Accession Number: 00138983
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 3 1976 12:00AM