Is it a violation to drive at 124 km/h in a 120 km/h speed limit zone?

[MiaLynn]

Violation. Theoretically, on a road with a speed limit of 120 km/h, driving at 121 km/h constitutes a speeding violation. However, in practice, the enforcement may vary due to the following factors. 1. Speedometer error: The speed displayed on the car's dashboard is usually about 5 km/h higher than the actual speed, and the error varies among different car models. Since the car's speed is calculated based on the number of tire rotations, it is prone to errors. Therefore, driving at around 130 km/h on the highway may actually be around 125 km/h. 2. The accuracy of speed detection devices is over 95%: The speed error detected by traffic police is less than 5%, which falls within the normal error range of the device. The error could be either lower or higher.