On the Morning Commute Problem in a Y-shaped Network with Individual and Household Travelers

This paper examines the morning commute problem when both household commuters and individual commuters are considered in a Y-shaped network with two upstream links and a single downstream link. The household parents daily pass through an upstream bottleneck with a limited capacity before a school and drop off their children. Then, they traverse the downstream bottleneck common to both household and individual commuters and arrive at the workplace. The authors derive the conditions for the existence of equilibrium. They find that increasing the schedule gap between the work and the school start times may not always improve social welfare. When the demand of individuals is relatively low, increasing the schedule gap may not improve the social welfare. Furthermore, the study reveals the capacity expansion at the downstream bottleneck can always reduce the total system cost. However, the paradoxical phenomenon may arise when the capacity of the upstream bottleneck is expanded, but it can be eliminated if the schedule gap is properly designed.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee ADB30 Standing Committee on Transportation Network Modeling.
  • Corporate Authors:

    Transportation Research Board

  • Authors:
    • He, Dongdong
    • Liu, Yang
    • Zhong, Qiuyan
    • Wang, David Z W
  • Conference:
  • Date: 2019


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 18p

Subject/Index Terms

Filing Info

  • Accession Number: 01698264
  • Record Type: Publication
  • Report/Paper Numbers: 19-05086
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:50AM