Abstract
This paper studies the relative efficiency of, and the interaction between, various information and pricing instruments for the regulation of stochastic road traffic congestion. Five regulatory regimes are considered: no tolling/imperfect information, no tolling/perfect information, non-fluctuating (`flat') tolling/imperfect information, flat tolling/perfect information, and fluctuating (`fine') tolling, implying perfect information. A simulation model is used to investigate the influence of some key parameters on the relative efficiency of the various regulatory regimes.