Only thing is that at the exits of MRT stations, some times you have to "fight" for taxis. I got in one door and another a couple tried to enter another door.
Also it helps if you know the road junction of where you are going, eg this road with that road or the nearest landmark. If you do not speak Mandarin, have the destination written and a mobile phone to a native speaker if you get lost.
Good thing is that in many streets in Shanghai, taxis and cars are not allowed to honk at other cars or pedestrians.


