See red light cameras. You recieve a ticket through the mail and you get pictures and a video of the violation. There is a lot of people against it and some governments have legistation against the use of it.
I thought that was mainly because red light cameras often lead to an increase in collisions because a driver is more likely to stop unsafely if they are worried about the light changing
Which is, in turn, caused by the unsafe shortening of the yellow light commonly used in combination with red light cameras in order to maximize ticket revenue. Because with an adequately timed yellow light, few people actually run the red light and the cameras become an expensive money pit that can't pay for themselves.
In India, on some newer signals in last 5-6 years, I have seen that when Red is on, & is going to go to Green, the Red will start blinking in last 5 or so seconds. Then Green will be ON.
When Green is ON, & is going to switch off, it will start blinking & then off, & then yellow will start blinking. Its ok to drive through blinking green or yellow if safe. But common training os drive through blinking Green, but if you see blinking Yellow, then stop.
Plus, some of the lights have counter. It shows how many seconds are remaining for the lit color. An experiment led the Bombay Municipality to install Noise Sensors are one busy traffic light with counter. Every time there is a Red Light, & counter is less than 10, normally people start getting impatient & start honking to force the front ones to move. But on this light, if the noise is above certain decibel while Red, the counter resets.
