I never saw anything like this before . There are no reasons for a traffic light to catch fire.
I hope that the police was came to, turned off the traffic lights, and directed the traffic later, while the maintenance company replaces the fried traffic light.
A traffic light controller(box) at the end of my street caught fire 3 yrs. ago. It litterally exploded. The wiring was said to be tampered with and shorted. They don't lock the boxes around here! The box still isn't locked. And some of them, the subpanel and meter are wide open, and I can flip the breakers off! (Or plug something in as there is an outlet too!) LOL
I hope that the police was came to, turned off the traffic lights, and directed the traffic later, while the maintenance company replaces the fried traffic light.