special vehicles and transport

Article 71. Traffic and signalling rules.
1. The rules in Annex III of this regulation apply, in addition to the general rules where applicable.
Special vehicles may only use the roads subject to the traffic legislation to travel, irrespective of the tasks for which they are destined based on their technical characteristics, except where carrying out road construction, repair or maintenance exclusively in the areas of these works or where specifically equipped to tow damaged, broken down or badly parked vehicles. Special vehicles may not transport loads, except if specifically designed to do so, for which they must have the appropriate authorization.
Drivers of special vehicles and exceptionally, others, used for road construction, repair or maintenance, are not required to observe the traffic rules, whenever they are carrying out works in the designated area, but must take the necessary precautions and ensure traffic is properly regulated.
2. Whilst working, drivers of works or service vehicles must use luminous signal V-2 referred to in Article 173.2:
a) When interrupting or obstructing traffic, to indicate their position to other users, the vehicle is specifically equipped to tow damaged, broken down or badly parked vehicles.
b) When carrying out cleaning, maintenance, signaling or road repair operations, to indicate their position to other users; if on an autopista or autovía, special vehicles must also use the signal from their entry to their arrival at the place where the works are carried out.
3. Whilst travelling, drivers of special vehicles or covered by the special transport regime must use the signal during the day as well as at night, whenever travelling on public roads at a speed not exceeding 40kph. In case of signal failure, dipped headlights and hazard lights must be used together.
4. Infractions of this article as far as the obligation to have the flashing light installed in the vehicle will be sanctioned in accordance with the arrangements in the LST Art 67,2.