There are less cars in paid courses. Usually they are professionals or semi-professionals. Just be courteous (有禮貌) and yell out '死車' when your car flips. When you see a large group of fast cars behind you, just drive to the side and let them by. People are very friendly.
Do you mean how to go to JV without a private car ? You may go there by taxi, mini bus or bus. Other C Hing may tell you the bus route no. passing near JV . ( I go there by private car too.)