Are there cases of being photographed for speeding at a 20 km/h limit?

[GabrielleMarie]

Generally, there are no cases of being photographed for speeding at a 20 km/h limit. Speed measurement is not allowed for a 20 km/h limit, but special circumstances cannot be ruled out. According to relevant regulations, mobile speed monitoring devices are generally not allowed to be set up on road sections with speed limits below 50 km/h (excluding 50 km/h). However, in special cases, speed monitoring devices can be set up after approval by the Municipal Public Security Bureau Traffic Police Detachment. Below are the relevant details: 1. Roads with speed limits below 50 km/h: Exceeding the speed limit by more than 10% but less than 20% results in a fine; exceeding the speed limit by more than 20% but less than 50% results in a fine; exceeding the speed limit by more than 50% but less than 70% results in a fine; exceeding the speed limit by 70% or more results in a fine. 2. Roads with speed limits between 50 km/h and 80 km/h: Exceeding the speed limit by more than 10% but less than 20% results in a fine; exceeding the speed limit by more than 20% but less than 50% results in a fine; exceeding the speed limit by more than 50% but less than 70% results in a fine; exceeding the speed limit by 70% or more results in a fine.