They do actually have regulations that specify yellow duration. In fact, one of the most high-profile and borderline satirical red-light camera cases in the USA

They do actually have regulations that specify yellow duration. In fact, one of the most high-profile and borderline satirical red-light camera cases in the USA[1] was one where someone challenged that the yellow light was not lasting the duration set forth by law. https://www.google.com/amp/s/www.digitaltrends.com/cars/red-light-camera-math/%3famp https://www.google.com/amp/s/www.digitaltrends.com/cars/red-...