Most are operators , however the Commission also employs supervisors , custodians and a wide range of skilled trades people who work on vehicles and critical subway and surface infrastructure .
The TTC has more than 12,000 employees .
Most are operators , however the TTC also employs supervisors , custodians and a wide range of skilled trades people who work on vehicles and critical subway and surface infrastructure .
The TTC has more than 12,000 employees .