On the Impact of HOT Lane Tolling Strategies on Total Traffic Level

Congestion pricing strategies often seek to maximize expected profit or maintain an acceptable level of congestion for a high occupancy toll (HOT) lane. However, many transportation planners are more concerned with reducing congestion levels than maximizing profits, and would prefer a pricing policy that changes travel behavior. This paper shows how tolling (or pricing) strategies can be used to control the congestion levels of both untolled and high occupancy toll (HOT) lanes. Using a user-equilibrium method, the paper calculates the number of travelers on each route during the peak period and provides a numerical analysis that determines the distribution of travelers for different tolling strategies. With the right tolling strategy, some travelers who initially plan to use the untolled lane during the peak period will change both their routes (i.e., select the HOT lane) and departure times (i.e., depart earlier or later). Using this result, static and dynamic pricing strategies are compared. With a dynamic strategy, a larger profit can be earned and congestion reduced in the untolled lane. Possible extensions for this study are discussed.


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  • Accession Number: 01150776
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 1 2010 11:16AM