What can be learned from international road pricing?

Road pricing is seen as one of the feasible measures both to reduce congestion as well as to better distribute the cost of road maintenance over the users. Internationally, quite some experience has been gained with road pricing. These experiences range from private toll companies to public agencies organizing road pricing. Various approaches may have different (dis) advantages. The question what lessons can be learned from these experience specifically for the situation in The Netherlands, with respect to obtaining most benefits in reducing congestion and more evenly distributing the cost of road maintenance.