The police officer regulates traffic by the help of body gestures. A transversely outstretched arm to the engine means you have to stop at the intersection. If the officer stands with his chest looking towards you, your direction of travel is locked. With two outstretched arms or arms pressed to the body, he can release the direction of travel. If the policeman is standing sideways towards you and you can see his profile, you are allowed to drive slowly. If his arm is stretched upwards, you have to stop and if the traffic is closed, you may continue driving soon. Vehicles in an intersection must leave.