On the high speed, is it always possible to listen to the navigation broadcast: speed measurement in the front area, please pay attention to slow down; or forward speed measurement and other reminders, then how do these speed measurements measure speed? Don't panic when you meet the speed test, I will help you unveil their mystery!
Interval speed measurement is our common means of speed measurement on high speed, the so-called interval speed measurement, in fact, in the distance of 10 to 20 kilometers at both ends of the set capture and speed measurement equipment, record the time of the vehicle through both ends and capture pictures. When the vehicle completely leaves the road section, the system automatically calculates the average speed of the vehicle in the section and transmits the data to the monitoring center through the network.
To put it bluntly, in this area, if you do not drive at a speed that exceeds the prescribed speed, then the passage time will be less than the passage time according to the prescribed speed, then this is speeding.
Fixed speed measurement, as the name suggests, is to install electronic eye equipment at a certain location, through the buried coil sensor to detect the electromagnetic changes caused by the cutting of magnetic field lines of mobile vehicles, so as to detect the state of the motor vehicle and convert the speed.
For fixed speed measurement, as long as the deceleration begins where the prompt board is seen, when passing, the speedometer shows that the speed is lower than the specified speed, and the timely speed reduction to within 10% of the floating range of the specified speed limit will not be punished by deducting points.
Mobile speed measurement is commonly used in police cars loaded with speed measurement radar or placed on the shoulder of the radar speed box, tripod, can be hidden on the side of the road in any section of the road. Flow speed measurement on high speed is not common, and it will appear more on national highways and urban expressways.
Therefore, no matter what the form of speed measurement, as long as everyone drives in accordance with the traffic regulations, there is no need to worry about anything.