The traffic threshold helps to calm traffic, resulting in a reduction in the frequency of collisions and the size of injuries. The traffic threshold may be installed on public roads only with the permission of the road owner (KOV or Road Administration). There is no need to coordinate on private roads with anyone. The thresholds must always be marked with the threshold traffic signs No. 687. In the event that the threshold is not indicated, drivers may lodge a claim for damages from the road keeper for the violation of the car. The flat traffic threshold is ideal where traffic calming is required, such as pedestrian crossings. For flat thresholds, the recommended maximum crossing speed is up to 30 km/h. Colour: red or black or beige.