Is a Speed Limit of 20 km/h Enforceable with Speed Detection?

[JordanDella]

Under normal circumstances, speed detection is not permitted for a speed limit of 20 km/h. Below are the relevant details: 1. Special circumstances: Generally, mobile speed detection monitoring devices are not allowed on road sections with speed limits below 50 km/h (excluding 50 km/h). In special cases, speed detection monitoring devices may be installed upon approval by the Municipal Public Security Bureau's Traffic Police Division. 2. Violation of speed limit regulations while driving a motor vehicle: A warning will be issued by the traffic management department of the public security authority. On roads with speed limits below 60 km/h, exceeding the speed limit by less than 50%, or driving medium-sized or larger passenger or cargo vehicles, school buses, or hazardous material transport vehicles on roads other than highways or urban expressways, exceeding the speed limit by less than 10%. For violations where the speed exceeds the limit by less than 50% in a 30 km/h zone, traffic police will only issue a warning without fines or penalty points; exceeding the speed limit by 50% or more will result in fines and penalty points.