A 17-year-old motorcyclist was last night in hospital with life-threatening injuries after a crash on North Shore Road.The teenager, from St George’s, was hurt in a three-vehicle accident involving a car and another motorcycle near Shelly Bay, Hamilton Parish, at about 5.45pm.He was taken to King Edward VII Memorial Hospital where his condition was last night described as stable; the other motorcyclist was taken to KEMH but his injuries were said not to be life-threatening.The road was closed for about two hours as traffic collision investigators carried out their inquiries.Anyone with information should contact Romeo Allen on 295-0011.