Abstract:
Application and extensions of a dynamic network equilibrium model, DYMOD, to the ADVANCE Network are described in this paper. ADVANCE is a dynamic route guidance field test designed for 300 square miles (770 square kilometers) in the northwestern suburbs of Chicago. The dynamic route choice model employed in this paper is solved efficiently by Janson's dynamic algorithm. Except for a small portion of links, realistic traffic engineeringbased link delay functions, instead of the simplistic BPR (Bureau of Public Roads) function, are applied to estimate link travel times and intersection delays for various types of links and intersections. Further, an expanded network representation is utilized. To this end, nearly 23,000 links and 10,000 nodes are modeled in this research. The time-dependent link flow, travel time, speed and queue spillback information are generated for the ADVANCE Network. The ADVANCE Network is divided into 447 zones, originally specified by the CATS (Chicago Area Transportation Study), to assign time-varying travel demand on the basis of CATS estimates for 1990. This is the largest dynamic route choice solution which has been obtained thus far, to the knowledge of the authors. The model has been solved on a CONVEX-C3880. Convergence and computational results are presented and analyzed.
tr58.pdf