Patent ID: 7388515

Claim:
An illumination apparatus for a STOP/SLOW reversible highway safety sign, said sign having opposite vertical sides and opposite STOP and SLOW sides, comprising: 1. a pair of left and right light boxes detachably connected to opposite vertical sides of a reversible highway safety sign; 2. left and right red lights located respectively in the left and right light boxes on the front STOP side of said sign electrically connected to a wiring system connectable to a power source and including a switch selectably operable for controlling the red lights to operate in different modes, including a first strobe mode wherein the red lights are strobed at a first speed, a second strobe mode wherein the red lights are strobed at a second speed faster than the first speed, and a steady ON mode; 3. left and right yellow lights located respectively in the left and right lightboxes on the back SLOW side of the sign electrically connected to a wiring system connectable to a power source and including a switch selectably operable for controlling the yellow lights independently of the red lights to operate in different modes, including a first strobe mode wherein the yellow lights are strobed at a first speed, a second strobe mode wherein the yellow lights are strobed at a second speed faster than the first speed, and a steady ON mode; and 4. a hollow vertical pole below and supporting said sign and said lights.