Traffic and transport causes more and more problems, such as environmental degradation, increasing congestion levels, decreasing accessibility and a declination of liveability in urban areas caused by noise and odour pollution. In general, the implementation of transport pricing policies is believed to be rather effective in reducing these problems by changing people’s transport behaviour. In this study we focus on transport pricing policies that imply a price increase for car use. One condition that needs to be fulfilled to make transport pricing policies effective is that they should be accepted. If pricing policies are not acceptable, they are not likely to be implemented at all. Therefore, it is important to examine the factors that make transport pricing policies acceptable. This study is aimed at examining which factors influence the acceptability of pricing policies. We assume that individual characteristics as well as characteristics of pricing policies affect the acceptability of transport pricing. Important individual characteristics may be derived from two general models: the theory of planned behavior (TPB; Ajzen, 1985) and the norm activation model (NAM; Schwartz, 1977). These models are aimed at explaining behaviour. It is believed that these models may also explain acceptability judgements, since policy acceptance indirectly influences environmental qualities by shaping the context in which decisions are being made (Stern, 2000). Various characteristics of pricing polices may also affect their acceptability. First, we expect that the acceptability of pricing policies depend on the perceived fairness of the policy: fair policies are more acceptable than unfair ones. Based on this we expect that the type of differentiation may affect the acceptability of pricing policies. Pricing policies often imply that certain car user groups have to pay more than others (i.e., variabilisation of costs), e.g., polluters pay more than non-polluters or people with higher incomes pay more than people with low incomes. Another important characteristic influencing the perceived fairness of policies is revenue use. We expect that pricing policies are more acceptable if the revenues are used to compensate those who suffer disproportionately from the policies. This study examines which type of variabilisation and revenue use is perceived to be fair and whether this influences the acceptability of transport pricing policies. Second, we expect that the more pricing policies restrict people in their freedom to move, the less acceptable the policies are. Therefore, the level of the price increase may influence acceptability judgements: the more significant prices increase, the more people need to adapt their travel behaviour, and the less acceptable the policies are. The perceived effectiveness may also affect the acceptability of pricing policies. On the one hand, if pricing policies effectively change people’s transport behaviour, people are likely to feel restricted in their freedom to move and therefore might find pricing policies not acceptable. On the other hand, if pricing policies have no effect at all, people have to deal with the costs, while at the same time the collective problems are not being solved. So, pricing policies should be effective to solve the problems, without significantly affecting once own travel behaviour. This study examines whether the price level and the perceived effectiveness affect the acceptability of transport pricing policies. A questionnaire study will be conducted among Dutch households. Respondents are asked to evaluate various transport pricing scenarios in which the price level, type of revenue use and type of differentiation will systematically be varied. All respondents will judge three scenarios on their acceptability, fairness and perceived effectiveness. Based on this, we will examine to what extent these policy characteristics affect acceptability judgements. We will also examine to what extent the acceptability of transport pricing is dependent on individual characteristics. Results will be available and presented at the conference.