Color image above from --
http://forgotten-ny.com/2010/09/wheelie ... ts-in-nyc/
Also pictured at that site --
The first traffic signals in New York city that appeared in December 1922 on Fifth Avenue and were designed by Joseph H. Freedlander. They were seven large towers positioned in the center of the avenue and were manually operated by a police officer seated in the tower.
Freedlander later designed the individual stoplights, each bearing the 17″ statue of the roman messenger god Mercury.