The bus driver was among four people injured when the streetcar and bus met head-on at Main Street and Danforth Avenue on Saturday morning.
Police have not revealed his name, and he has yet to appear in court.
The TTC is speeding up a review of its recruitment and training practices in light of criticisms it does not do enough to protect its passengers.
"I don't think there's any concern about getting on a bus, streetcar or subway train for that matter," the TTC's chief operating officer, Gary Shortt, said after the crash. "We've got an excellent record. It's unfortunate this happened, but I've got full confidence in our drivers and vehicles."
Eight days before the collision, a TTC bus struck and killed a 14-year-old girl, and then failed to remain at the scene.
"We pride ourselves on putting out a safe and reliable service," TTC CEO Andy Byford told CBC after the death of the girl.
The TTC would not comment specifically on the latest incident, saying only it is in the hands of the police.
"We are continuing with the plan to accelerate the review of driver training," said a spokesman.
"I’m sure Saturday’s incident will also be taken into account, but I can’t speculate as to how this will affect training."
There will be an internal investigation as well as the police investigation, the TTC said.
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