A man is in a trauma centre with life-threatening injuries after a collision in Brampton on Sunday, according to police.Peel police say the incident occurred at Torbram Road and Countryside Drive just before 5:30 p.m. when a motorcyclist, an adult male, was struck by a vehicle.He was taken to a local hospital and then transferred to a trauma centre. The driver of the vehicle remained on the scene.The Major Collision Bureau is now investigating.