A Ride On bus burst into flames Tuesday afternoon, the third of the same model to have caught fire while driving on Montgomery County roads in the past 15 months. The fires all struck Champion buses of the same model that look more like an airport shuttle than a long city bus. They were the only ones in the Ride On system to have fires in that time, according to David Dise, who oversees the maintenance of Montgomery’ County’s vehicle fleet.

And two of three fires destroyed the vehicles.