Originally Posted by sokolov

The 747 bus ticket IS a 24 hour ticket. You can use it for all public transport in Montreal for 24 hours. Did that recently, but I had massive problems with the ticket at subway stations. Sometimes it was accepted, mostly it was not. I had to go to the booth, explain, sometimes they called someone - but at the end I could always ride and I did not have to pay extra. It was a hassle though.