How is the average speed calculated in a speed control zone?

[Howard]

Interval speed measurement works by determining the distance and travel time within a zone, as detailed below: 1. The speed is calculated by dividing the distance of the entire zone by the time difference between entering and exiting the zone to check if it exceeds the speed limit. 2. The speed is derived from the ratio of the distance traveled to the time difference between entering and exiting the highway. If the time exceeds the limit, the amount of overage determines the fine as per regulations. Here are some tips for highway driving: 1. If you see a sign for 'average speed check,' avoid driving too fast and stay within the posted speed limit. As long as your speed is normal when passing the monitoring point, you generally won't be caught for violations. 2. If you are recorded at the first checkpoint, simply maintain an average speed below the posted limit by the time you reach the second checkpoint, ensuring your average speed does not exceed the limit.