The authority in charge of traffic regulation shall be responsible for temporary signage due to traffic contingencies and for variable signage necessary for its control, in accordance with road legislation.

In this regard, it is the responsibility of the autonomous body, the Central Traffic Headquarters, or, where appropriate, the autonomous or local authority responsible for traffic regulation, to determine the types or sections of roads that must have temporary or variable signage or other means of surveillance, regulation, control and telematic management of traffic; the characteristics of the physical and technological elements that are intended to assist the traffic authority; the installation and maintenance of said signage and physical or technological elements, as well as the determination at any given time of the uses and messages of the variable message panels, without prejudice to the powers that, in each case, may correspond to the bodies that own the road.