BOSTON -- The driver of a Massachusetts Bay Transportation Authority trolley car that rear-ended another trolley, sending nearly 50 people to the hospital on Friday, has several infractions on his motor vehicle driving record, Team 5 Investigates has learned.

Team 5 Investigates found that Aiden Quinn's Registry Of Motor Vehicles driving record includes a speeding infraction from 2002 in Middleborough, 2003 in Raynham and 2007 in New Hampshire. He was also cited in a March 2008 crash in Boston's Dorchester neighborhood. Read: Quinn's Driving Record (.pdf)

Quinn was born a woman and received his driver's license as Georgia Anne Quinn. The Registry of Motor Vehicles said that Quinn's driving record was merged to reflect his new name of Aiden Quinn last month.

MBTA spokesman Joe Pesaturo said Quinn did not have any previous safety violations on his work record, but had one attendance violation. Pesaturo said he expected Quinn to be fired from the MBTA in the coming days.

Forty-six passengers were hurt when a Green Line MBTA trolley hit another trolley when the driver ran a red light while texting his girlfriend, officials said.

Three of four trolley cars were crushed, and damages from the crash are estimated at $9.6 million.

Quinn, 24, of Attleboro, Mass., may face criminal charges in the crash. Quinn will be fired later this week if investigators verify that he was using his cellular phone before the crash, MBTA General Manager Daniel Grabauskas said.

Quinn has been employed by the MBTA for 22 months, but has only been working full-time for the authority for two months. Quinn applied to the MBTA in 2004, when he still went by the name Georgia Quinn.

Federal investigators said over the weekend that there were no mechanical problems that caused the crash. They said the operator not only ran a red light, but also passed a yellow light before the collision.

"Then the train encountered a yellow signal and a red signal. The point of collision occurred 80 feet past the red signal," NTSB member Debbie Hersman said.

Quinn did not show up for a scheduled meeting with supervisors on Sunday, MBTA officials said.

Quinn’s car was traveling 25 mph when it careened into the back of the waiting train, officials said. It is unclear whether Quinn was braking immediately before the collision, but if the trolley’s speed was constant, the idling train would have been visible for at least 13 seconds before it was struck.

Investigators said that Quinn’s trolley also failed to stop at a red signal light 80 feet before the spot where the trolleys collided. The first trolley was pushed 31 feet down the tracks after it was struck.

NTSB officials said that rear lights from the waiting train should have been seen in the dark tunnel 480 feet from the spot where it was struck.

Pesaturo said the MBTA has had cell phone usage polices in effect since at least 2000, and said Friday's incident was an aberration.

"We still believe that the message has gotten through to the overwhelming majority of our drivers," he said.

Pesaturo said the MBTA will announce later this week a new "one strike and you're out" cell phone policy.

"This new policy that will be a first in the nation will basically make (cell phone use) a serious safety violation. And if you have a cell phone or other electronic device -- even on your person -- while operating any T passenger vehicle, it won't be a warning; it won't be a suspension. It will be one strike and you are out," he said

Boston Carmen’s Union president Stephen Macdougall said the preventable crash does not reflect the behavior of most MBTA workers.

“The individual involved in last night’s incident and the issues led up to that tragedy were avoidable,” he said. “This was an individual act by an individual who does not represent the attitudes or the professional conduct of all or most MBTA workers.”

If Quinn was texting his girlfriend, he would be at least the 10th driver guilty of the offense in the last year.

In the last year, the transit agency has suspended at least nine other bus and trolley drivers for texting or talking on their cell phones while driving.

Meanwhile, as the probe into the crash continued on Monday, commuters said they were not worried.

"Maybe it was a one-time thing. But I wasn't really worried about it," said Joanne Woodland, of Lynn.

"When you get on an airplane, right? That is of course much worse whenever that happens, right? But you just have to keep going," said Carlos Martinez, of Cambridge.