(WVLT) - A motorcycle driver is in critical condition after crashing his bike early this morning. Investigators say the motorcycle went off the road and hit a tree at about 1:30am on Sevierville Pike near White School Road in South Knoxville. Paramedics took the driver to U.T. Medical center where he is listed in critical condition. Investigators aren't releasing his name at this time. They do not know yet if alcohol was a factor in the accident.