Do not honk (except in an emergency or on new years eve)!
 
Also:
Do not show the finger and call that miserable
amateur on the road names.

Explanation:
While the above described social interactions are acceptable
and even mandatory in some big cities on the mainland, 
they're considered rude here. Don't ask me why, 
I don't know, just trust me :-). 

DO NOT EVER LEAVE 
ANYTHING VALUABLE IN YOUR CAR! 
Our crime rate is is almost non-existent,
but items from tourists' cars do have the tendency to disappear :-).



And yes... we insist on calling it a "hump"... 
like in "humpback whale" :-).

BACK