I never used Google Maps for public transport anyway because they report scheduled times, which are useless. Bing isn’t any better.

Good third party options:

- The Transit App – http://thetransitapp.com

- Lumatic City Maps – http://lumatic.com

- Transporter – http://www.transporterapp.net

- Pocket Muni – http://www.pocketbus.com

The first two also do routing and integrate with iOS 6 Maps. Regarding public transit I am actually happier with iOS 6 than I was before, precisely because of the 3rd party integration.

It took me about 5 tries for it to actually find the address I kept searching for and tapping on, but once it 'took' the directions were accurate and easy to follow (walking to the stop, which bus, how long, etc).