After being in Nanjing for a week and a half I had my first opportunity to go on the Nanjing Metro today. The Nanjing Metro is relatively new; first opening in 2005. There are plans to open a second line in May 2010.
The metro is very similar to Shanghai metro in terms of signage and trains.
Travel is either by an IC Card (similar to London’s Oyster Card but can also be used in Taxis) or a single use ticket. The ticket is a reusable plastic token with the journey and payment information embedded in it.
Tickets can be brought from either ticket machines or ticket desks.
The trains are clean and air conditioned though do have interesting prohibition signs on them:
(I have just re-read this post and realised it makes me sound like a bit of trainspotter!)