It's a Sign of the Times

There is a new sign at the hospital lights. What does it mean? Shouldn't symbols make something more clear and not merely leave one puzzled as the light turns green? Does it mean people might be crossing the street on their way to the hospital? Does it mean that first aid might suddenly be given to someone in the crosswalk? Does it mean that patients on their way to doctor appointments better stop thinking about their co-pays (is it $10 or $20?) and start paying attention to pedestrians in the crosswalk?
My best guess is that it's trying to say: Don't worry if you are caught in the elevator door, there is a hospital near by.

song: It's a Sign of the Times • artist: Petula Clark