Tradable Peak Credits (TPC) is a new instrument to reduce congestion. It is expected to have a higher public support than traditional road pricing. So far, research has mainly been conducted into behavioral effects and effects on the road network of implementing such systems. This study investigates the public support for TPC and how this support is influenced by the design of the TPC system by means of a stated choice experiment. It was shown that TPC does not have a higher public support than a congestion charge and a kilometer charge as was hypothesized. Also, it was shown how different groups of variables influence the support for TPC. Furthermore, public preferences regarding the design of a TPC system were revealed. Recommendations are made for further research on TPC and for policymakers. The stated choice experiment was also used to investigate to what extent variations in communication medium and content influence the outcomes of the experiment.