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What is the difference between mobile speed measurement and section speed measurement?

2 Answers

ChristianRose

07/25/25 1:46pm

Mobile speed measurement involves randomly setting up a point on the road to measure speed, while section speed measurement monitors the entire stretch of road. Below are detailed introductions to mobile speed measurement and section speed measurement: Mobile Speed Measurement: This method is random. Traffic police will set up a speed measurement device at a random point on the highway. This type of speed measurement is characterized by its single-point nature, unpredictability, and mobility, making it difficult to avoid through navigation. Section Speed Measurement: Section speed measurement is more complex in terms of equipment compared to single-point speed measurement. At the starting point of the section speed measurement, there is a set of speed measurement devices, and at the ending point, there is another set. By recording the time a vehicle enters the starting point and the time it leaves the ending point, and dividing the length of the measured section by the time taken, the average speed can be accurately calculated. Section speed measurement is considered more reasonable.

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VanAdriana

08/11/25 8:52pm

I think the biggest difference between mobile speed cameras and average speed cameras lies in predictability. Mobile speed cameras are like police officers temporarily using speed guns by the roadside or in vehicles to catch speeding, with no fixed location—they might be here today and somewhere else tomorrow, often catching drivers by surprise with sudden fines. Average speed cameras, on the other hand, are much more fixed, measuring the average speed between two points on highways or major urban roads, encouraging drivers to maintain a steady speed throughout and avoid sudden braking or acceleration. With over 20 years of driving experience, I find the shock of mobile speed cameras the most annoying—getting fined when my speed is usually fine feels unfair. Average speed cameras, in contrast, seem fairer, helping to cultivate stable driving habits and reduce rear-end collisions. However, both can be easily alerted by navigation apps, so using a mobile app to avoid them works just fine.

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