No serious injuries after collision involving 3 school buses

A scare for dozens of teenagers off the western end of Montreal. 

Three school buses, all carrying high school students, were involved in a crash. 

Twenty-three of the students were taken to hospital, but officials say none of the injuries was serious. 

Police say the accident happened on St. Charles north on the highway 40 overpass, heading toward the Costco.  

It appears the first bus came to a stop at an intersection, the second bus wasn't able to stop in time to avoid hitting it, followed by the third bus.