Jeff Boutet said he remembers closing his eyes while heading home after a late shift at Laval University's radio station earlier this week.
Apparently, the driver never woke him up when they reached the end of the route.
"I'm there with a lot of buses around. There's no driver. All the lights are out," he recalled in an interview with CBC.
Boutet said the bus door was locked, so he had to climb through a window to get out.
He eventually made his way out of the building and managed to get a taxi home.
In a written statement, Quebec City's public transit corporation said it's investigating the incident.
It also said guidelines demand drivers check for passengers before leaving.
Boutet said he hopes the transit corporation learns from his experience.
"I have epilepsy. If I had a seizure on the bus, no one would have been able to see me or help me. This is absolutely unacceptable from the public service," he said.