How many minutes can you park in a no-parking zone before getting captured by surveillance?
1 Answers
5 minutes. Relevant information about illegal parking: 1. Information 1: Electronic eyes use induction lines to sense the pressure from vehicles on the road. The signals are collected by sensors and sent to the central processor, then temporarily stored in registers (this data is valid within one red light cycle). 2. Information 2: Within the same time interval (red light cycle), if two pulse signals are generated simultaneously, it is considered "valid". For example, if the front wheels cross the line during a red light but the rear wheels don't, only one pulse is generated. No photo is taken unless there are two consecutive pulses. 3. Information 3: When the yellow light is on, the photo system delays for 2 seconds before activating; when the red light is on, the system is already active; the system shuts down 2 seconds before the green light is about to turn on, mainly to prevent false captures. This is why many taxi drivers know they can leave when it's about time.