%A Steven P. Dirkse
%A Michael C. Ferris
%T Traffic Modeling and Variational Inequalities using GAMS
%D April 1997
%R 97-06
%I COMPUTER SCIENCES DEPARTMENT, UNIVERSITY OF WISCONSIN
%C MADISON, WI
%X
We describe how several traffic assignment and design problems can
be formulated within the GAMS modeling language using newly
developed modeling and interface tools. The basic problem format is
user equilibrium, where multiple drivers compete noncooperatively
for the resources of the traffic network. A description of how these
models can be written as complementarity problems, variational
inequalities, mathematical programs with equilibrium constraints or
stochastic linear programs is given. At least one general purpose solution
technique for each of these model formats is briefly outlined, and some
observations relating to particular model solutions are drawn.