If you saw how many relays/circuitry, motors, and lights were in it, you'd know that it does.
This is a standard Vista bar from a police car with the blues removed. The newer ones are smaller because they've gone LED with everything, which eliminates motors and such.
But when you're running as a volunteer and things like this are donated, you don't get to be really picky.
Besides, it only looks funny like that from an aerial view.