After spending the morning taking in the breathtaking sights at Niagara Falls, a group of tourists boarded a bus to return to New York City, not knowing about an hour later, their bus would be lying on its side in the ditch off the New York State Thruway.

M&Y Tour has a “satisfactory” safety rating and no record of accidents or fatalities over the past two years, according to the Federal Motor Carrier Safety Administration. Officials inspected the company’s buses and drivers 60 times over the past two years, the agency said.