A fictional film for children about the rules of the road. The hero of the film, an elementary school student Andrei (Seryozha Selivanov) and an amateur detective Sherlock Holmes (actor S. Ostanin) conduct an "investigation" on Moscow streets, during which Andrei gets acquainted with road signs, traffic rules and "establishes" that the drivers' friends of different colors and pedestrians are traffic lights. 1st and 2nd parts. Moscow. The movement of road transport on the streets of the city. Pedestrians on the sidewalks. Road markings on the street carriageway. Underground and ground crossings. Pedestrian bridge. Traffic lights. Road signs. The traffic police inspector regulates the movement of vehicles. Moscow region The movement of vehicles at the intersection of highways. View of the road of regional significance.