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Finding a better renewal time and improved contract design for switches and crossings

Author

Listed:
  • Odolinski, Kristofer

    (Swedish National Road & Transport Research Institute (VTI))

  • Nissen, Arne

    (Trafikverket (The Swedish Transport Administration))

  • Ait-Ali, Abderrahman

    (Swedish National Road & Transport Research Institute (VTI))

Abstract

Switches and crossings are critical assets in railway systems and their maintenance and renewal costs can be substantial. This paper evaluates the economic impact of cumulative loads on such assets and the effect of different contract designs for railway maintenance. Results from survival analyses are combined with a life cycle costing model to analyse costs for maintenance, train delays, and renewals. The findings provide insights into improving the timing of asset renewal as well as the impact of different reimbursement rules in the design of maintenance contracts. The estimated optimal lifetimes of different types of switches and crossings are similar to their technical lifetimes, yet there a couple of exceptions. The estimated effects of the reimbursement rule provide unique results on the risk premiums allowed in order to achieve a break-even between different maintenance contract designs.

Suggested Citation

  • Odolinski, Kristofer & Nissen, Arne & Ait-Ali, Abderrahman, 2023. "Finding a better renewal time and improved contract design for switches and crossings," Working Papers 2023:11, Swedish National Road & Transport Research Institute (VTI).
    • Handle: RePEc:hhs:vtiwps:2023_011
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    More about this item

    Keywords

    Switches and crossings; Maintenance; Renewal; Lifecycle costs; Contract design; Reimbursement rule;
    All these keywords.

    JEL classification:

    • H57 - Public Economics - - National Government Expenditures and Related Policies - - - Procurement
    • R42 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Transportation Economics - - - Government and Private Investment Analysis; Road Maintenance; Transportation Planning

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