I have an original idea. Bring back bus conductors on buses.

CCTV does diddley squat towards making me feel safe as even if there tends not to be in working order, as do police officers, uniformed or not. They are usually looking in the opposite direction when a crime is being committed under their very noses.
However CCTV would be marginally useful at bus stops- better than nothing.

I was injured on a bus some months ago when the driver deliberately shut the door on me, hitting my pregnant stomach as I stood waiting to pay. He accused me of holding up the bus yet how could I go and sit down without a ticket. Thankfully the only damage was slight external bruising and the baby was fine. It took weeks to get through the various bureaucratic obstacles to make a complaint, and the cctv wasnt working. At least thats what the bus company said. So nothing could be progressed.

Forget the technology, go for the staffing.