Signaling of obstacles and hazards is one of the topics in the General rules block of the Spanish DGT theory. Defines who the traffic rules apply to and where, the basic definitions and the principles behind the whole theory. Understanding this section well helps you answer the theory-exam questions on this topic with confidence.

In simple terms, this point of the DGT theory establishes that in order to warn of the presence of any obstacle or danger on the road, the person causing it must effectively signal it, both day and night.

The exam often asks where and to whom these rules apply; read the options carefully, as they frequently change a single word.