Remember that episode of Leverage (season 5, episode 3), where Alec uses Marvin to wirelessly change all the street lights green so they ... can be found on the traffic light manufacturer ...

Elementary schools put the brakes on bad behavior with traffic light flashcards, and a pediatrician created the “Red Light, Green Light ... and the new sign of modernity will be living in ...

Ambulances move differently than other vehicles. That is something that everyone already knows. When they need it, it is essential that they get to where they need to be as quickly as possible.