Originally Posted by
g46r
On a recent trip I noticed that the directional signs (exits, city names, etc) on Chinese freeways are now white characters on green background - same as what is being used in U.S/Canada. I remember a few years ago the same signs were standardized on white characters on blue background (I was very certain of this fact because it struck me as odd). When did it change?
I'm not sure if it had ever changed. The green backgrounds are used for motorways while the blue backgrounds are for lower-grade roads.