We dont need this in NYC.. already have it, it's called watch the lights change on the perpendicular street. If you cant see the overhanging lights because of a bad angle then watch the pedestrian crossing lights. When the orange hand starts blinking "get ready". When it stops blinking "get set". +/-7 seconds later, "go"!

PLUS, combined with people running yellow lights, people jumping the gun on this timer lite will lead to alot of "no-fault" accidents.