You're right, when I was studying the traffic laws for the exam, I didn't find any rule forbidding the use of expressways for bikes...
Unfortunately I lack the vocabulary about traffic laws to explain myself clearly to the cops if I was to take the expressway to test it. But it's not difficult to learn, I'll check the useful words for it, beginning by how to say "national traffic law". ;-))


What I gather from this first round of replies is that except taking the expressways, there's no obvious scenic roads/places reachable from Shanghai using only the "normal" roads in a relative short amount of time (2h more or less), including the famous G318 ? When I leave for a ride, I'm always on the road before 7AM, so this is not a problem for me.
Remember, I already went to Sheshan, Dianshan Hu, Taihu, Xitang, etc. Anything else worth mentioning ?

I'll still go to Moganshan this WE, but with my bike (150cc), 2-up, it'll be slow and painful...