Drivers should carry with them at all times an International Driving License. They should have at least one year driving experience. They should have on them documents pertaining to the car at all times. Drivers should carry their passports as well. Some traffic police are extremely corrupt and looking to make some extra cash so if bothered too much simply hand over a 100 Bahts or so. It should be noted that driving in Bangkok is a hassle because of frequent traffic jams, unclear road signs and reckless drivers on the roads. Driving oneself is not advisable.