What is the signal for a car to slow down?
1 Answers
The signal for a car to slow down is when a traffic officer extends their right arm forward to the right with the palm facing downward, and then swings the right arm and hand downward in a straight motion. Below is a detailed introduction about vehicle speed: 1. Overview: Vehicle speed refers to the distance a car travels in a unit of time, commonly referred to as speed, with the usual units being kilometers per hour or meters per second. Vehicle speed is one of the three parameters used to describe traffic flow and holds significant importance in traffic flow theory research. 2. Others: Vehicle speed can also generally refer to the speed of motor vehicles. To suit different purposes, vehicle speed is mainly categorized into spot speed, segment speed, and design speed. Spot speed is the instantaneous speed of a car passing a specific point on the road. Design speed is the speed established to determine the design indicators of various geometric elements of the road and to ensure their mutual coordination.