Yes he did: Section 148(5). I looked it up: Vehicles or equestrians overtaking others (5) Every person in charge of a vehicle or on horseback on a highway who is overtaking another vehicle or equestrian shall turn out to the left so far as may be necessary to avoid a collision with the vehicle or eq...

It was on DVP and the speed was about 75km: heavy traffic. I was in the middle lane. All of a sudden the car ahead of me hit brake so I did too. Alas the car slowed down much faster than I anticipated and although I adjusted accordingly I failed to avoid hitting him from behind. An accident occured....