What effects can result from taking drugs?

The selected combination is correct because all three effects—impairment of concentration, increased readiness to take risks, and miscalculation of speeds—are recognized dangers when driving under the influence of drugs. According to German traffic regulations, driving while impaired by drugs is illegal, as these substances can significantly affect a driver's ability to operate a vehicle safely.

Impairment of concentration can lead to slower reaction times and distractibility, increasing the likelihood of accidents. Increased readiness to take risks further endangers not just the driver but also others on the road. Finally, miscalculation of speeds can contribute to poor decision-making, such as inappropriate following distances or speed adjustments. Recognizing all these effects is essential for safe driving and compliance with legal standards in Germany, reflecting the serious nature of drug influence on driving capabilities.