Helsinki will not carry out a physical demonstration, but will carry through an extensive modelling exercise to prove the potential as a demand management tool. Alsothe acceptability of pricing and expected behavioural impacts will be studied by organising a SP survey and interviews with various stakeholder groups. In this phase special emphasis will be put on to find out the opinions of the "key" authoriities, in order to be able to define the way forward from the procedural point of view. All these activities, as well as the cooperation with the other PROGRESS sites, aim at raising the awareness of the potentail of the road pricing.