A Largo man sustained life-threatening injuries Saturday night when he lost control of his motorcycle and crashed into a street sign.
Police say John Green, 40, was riding northbouned on 66th Street North, at 121st Avenue North, around 7 p.m. when he drove onto the median and struck a street sign.
Green, who was not wearing a helmet, was ejected from the motorcycle and transported to Bayfront Health St. Petersburg, police say.
Alcohol may have been a factor in the crash, police say.
The crash forced multiple lanes to close on 66th Street North for several hours during the investigation.