Industrial
and
EIN 6918: Graduate Seminar
Spring 2008
January 24, 2008
3PM, MAEB 211
Discrete-Time
Dynamic Traffic Assignment Model for Managed Lanes
Qipeng Phil Zheng
Department of Industrial and Systems Engineering
Abstract
On highways, lanes with tolls and those not open to all types of vehicles are sometime referred to as “managed” lanes. Examples of managed lanes include “High Occupancy Vehicles” (HOV) and “High Occupancy Toll” (HOT) lanes. The former refers to lanes on highways that are reserved for vehicles with a driver and one or more passengers. The latter refers to those that allow all vehicles. However, vehicles with only a driver must pay tolls.
In this talk, we present a discrete-time traffic assignment model to predict traffic flows on managed lanes at various times in the whole planning horizon. The model minimizes total delay and belongs to a class of dynamic traffic assignment (DTA) problems. When applied to general networks, DTA problems can be large and difficult to solve. However, the problem is more manageable when applied to a network of managed lanes. In particular, our DTA problem for managed lanes reduces to a mixed integer programming problem for which several efficient heuristic algorithms exist.
This is a joint work with Dr. Siriphong
Lawphongpanich, and Dr.