A 44-year-old motorcyclist was hospitalized after crashing near North Stoughton Road and Reider Road in Madison shortly before 8:15 a.m. Friday, according to Madison police. Police said the rider lost control, hit a median and then struck a traffic sign. The impact threw him from the motorcycle. A witness reported that the motorcycle had been traveling at a high rate of speed. Police also said the rider was not wearing a helmet and that investigators are determining whether alcohol was a factor. The crash remains under investigation. Police have not released the man's condition or identified any other vehicles involved.