| Article ID: | iaor20102952 |
| Volume: | 37 |
| Issue: | 3 |
| Start Page Number: | 211 |
| End Page Number: | 214 |
| Publication Date: | May 2009 |
| Journal: | Operations Research Letters |
| Authors: | Marcotte P, Zhu D L |
| Keywords: | network equilibrium |
In this work we provide a simple proof of the existence of optimal tolls for multiclass network equilibrium problems where the value-of-time parameter varies continuously throughout the population. The main argument, based on a finite-dimensional reformulation of the problem, also allows us to determine in a simple fashion revenue minimizing link toll vectors.