“However, the same technology could be expanded to additional emergency response vehicles in the future as resources allow.” So when a fire truck traveling along a crowded corridor nears an intersection, the traffic lights will change to allow it to pass. Econolite’s TSP became available to Richmond after the city received a $1.9 million federal grant, which officials matched with $1.9 million in city funds. Every year, Americans are injured or killed by emergency vehicles going through red lights. “We shut down all the emergency lights and wait for the light to turn green because you don’t want to shove people into the intersection … or cause panic.”