Taxis are the most comfortable way to get around. Be aware that they tend to disappear during inclement weather, and rush-hour traffic can be infuriating. There's a Y13 charge for the first 3 km (2 miles) and Y2.3 per kilometer thereafter. After 11 pm the initial charge rises to Y14 and there's a 20% surcharge per additional kilometer.
Drivers usually know the terrain well, but most don't speak English; make sure to have your destination written down in Chinese. (Keep a card with the name of your hotel on it for the return trip.) Hotel doormen can help you tell the driver where you're going. It's a good idea to study a map and have some idea where you are, as some drivers will take you for a ride—a much longer one—if they think they can get away with it.
Taxi Booking Service. 010/96103.