Tests for the detection of narcotic substances, psychotropic drugs, stimulants or other similar substances 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 violations of this provision relating to driving under the influence of narcotics, psychotropic drugs, stimulants or other similar substances, as well as the violation of the obligation to submit to tests for their detection, must be considered very serious violations, as provided for in the consolidated text.

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