
By considering historical traffic record, the main roads of inner central of Bangkok face serious traffic congestion, quantity of cars on road is more than 2,000 cars/hr, eventhough many approaches were implemented on this area. As a result, road pricing approaches were implemented on this area. As a result, road pricing approach shall be considered as another choice for traffic congestion relief, especially in developed countries. So objective of this research is to find the relationship between public attitude on acceptance road pricing system and factors influencin to their attitude.