The present invention concerns a parking disc for mounting on a vehicle where the parking disc is placed visible from outside, where the parking disc includes means for at least externally indicatinga time for initiation of the parking, where means for indicating the time consists of an electronic display which during normal driving shows the actual time and where the display during parking constantly shows the time of initiation of the parking. It is the purpose of the invention to provide an electronic parking disc that keeps showing the time of the initiation of the parking even if the ignition of the vehicle is turner on, and where switching to display of actual time only occurs after fulfilling operation conditions in a way that do not allow remote operation. This may be achieved with a parking disc as the one described in the introduction, if the parking disc is designed so that switching the display when resuming driving is effected on the basis of an electric signal from at least one detector that determines an actual relative movement of the vehicle, where the switching of the display occurs after determining a minimum value of the movement of the vehicle. Hereby may be achieved that the electronic parking disc continues to show a fixed time the indicates initiation of the parking until the mentioned detector has determined movement of the vehicle. This may e.g. be that the vehicle has moved a number of meters in relations to the point at which parking has been initiated.