Patent ID: 8089373

Claim:
A sign system for roads comprising: a back sign for roads including: a mount affixed to the ground and adjacent a road, and having a front face visible to oncoming traffic; a back sign device affixed to said mount and located on a rear face visible to traffic that has passed the back sign device, the back sign device has words and/or a symbol written backwards so that the words and/or the symbol appear normal when viewed from a mirror; a broadcasting unit for broadcasting a signal providing additional information about the back sign device; and a receiving unit adapted to receive said signal from said broadcasting unit, wherein said receiving unit is positioned as an accessory device in a vehicle and is adapted to communicate with a driver of the vehicle, whereby, when said driver of said vehicle approaches said back sign, said receiving unit alerts the driver of said additional information about said back sign device such that the driver observes said back sign device in a mirror after passing the back sign.