Effects of road pricing on system performance

W. H.K. Lam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


This paper investigates the effects of road pricing on system performance and describes two facts about flow pattern in a transportation system. The first, illustrated by an example of Braess paradox, is that adding a new link to the network does not necessarily minimise the total travel time. The second is that the introduction of appropriate toll pricing may reduce not only the total network time, but also the travel time for each individual traveller. It follows with the investigations of different system objectives and different pricing policies (only toll pricing and distance-based pricing are considered), and shows how they affect the system performance and flow pattern. Lastly, three different assignment methods are compared and an equilibrium assignment method is proposed for network design purpose. -Author

Original languageEnglish
Pages (from-to)631-635
Number of pages5
JournalTraffic Engineering & Control
Issue number12
Publication statusPublished - 1 Jan 1988

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Civil and Structural Engineering
  • Transportation
  • Control and Optimization


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