Who Invented The Traffic Light?

Well, this is an often debated question. For most say the original traffic light was invented by Garrett Augustus Morgan (Black inventor, who also invented the 'Safety Hood') in 1920, Detroit, Michigan. He has been credited with inventing the first traffic light and all its attributes.

However, in 1868 a traffic signal was used in London which used a revolving lantern based system. This was invented by JP Knight and the traffic light contained all the same attributes with the same colour system. However, no patents have been found or have been released for this invention. Thus leaving Garrett Augustus Morgan to claim himself as the inventor of the traffic light.

Lester Farnsworth Wire.

Sorry I screwed up and answered twice....here is the link in case you only see this answer. Forgive me I am new.
inventors.about.com

The traffic light was invented in 1920 by a black invented named William Potts.he was a very intelligent man.