Taxi, the best is Yellow, then Red. All the taxi has satellite.衛星道航 system. If any accident or stolen, the system will automatic call police. And if the taxi driver chosen the longer road, you can copy the taxi number and complaint, the taxi driver will need pentally $500. The day time is OK. But careful at the night time.
Have a nice trip!
參考: the infomation told from the Guangzhou taxi driver on 1 sep 2007