Opening statements were heard Tuesday morning in the John Tomaszewski trial. Tomaszewski was driving the double-decker Megabus that hit the low bridge on the Onondaga Lake Parkway in 2010, killing four people. He is facing four counts of criminally negligent homicide. YNN's Sarah Blazonis was in court and has the latest.

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ONONDAGA COUNTY, N.Y. -- Opening statements were held Tuesday morning in the trial for the driver involved in the deadly Megabus crash on the Onongaga Lake Parkway in 2010. John Tomaszewski is facing four counts of criminally negligent homicide.

Police said he was driving the double-decker bus from Philadelphia to Syracuse when the bus hit the low bridge on the parkway, killing four people and injuring several others.

During opening statements, the prosecution said that Tomaszewski missed at least 13 signs telling him the bridge was only 10 feet nine inches when the double-decker bus was 14 feet tall. They also said that he was taught during training to not use electronic GPS devices. Despite that, they said one was found in the bus after the crash.

Defense lawyers, on the other hand, said Tomaszewski was unable to take the correct exit because a car cut him off. They also pointed out that there had been several crashes at the railroad bridge in recent years and nothing had been done about it.

Tomaszewski had refused his right to a jury trial, leaving it up to the judge to make a decision in the case.