some time during the Koch Administration.

diamond pattern where painted on high fine grids...as a warning.. and most cops are pretty nice to out of towners.. but there is no telling...its one way to tell if a movie scene is really in NY or if they are using Toranto as a NY stand in (the traffic signal lights in Toranto tend to be horizontal, too, an other give away the you are no in NY.. )

we almost never have horizontal traffic signals except under the els, (and there are no more els in Manhattan, (except 1 small patch at 125th street)