An early Saturday morning drive turned into a vehicle rollover on the Industrial Parkway near Church Street in Alliston.
OPP arrived to a yellow Chev Colbalt in the ditch and a drunk male driver.
The male passenger was ejected from the car. He was transferred to hospital in critical condition. Another female passenger had non-life threatening injuries.
The 17 year old driver from New Tecumseth was arrested and charged.