If riding a motorbike, only do so if you have many years of experience. Especially on the southern islands, where huge numbers of foreigners leave Thailand in a wooden box. Wear the best helmet you can afford. And drive like a grandmother. This applies to ex-pats too. Bring along an international drivers license. This helps you to avoid being fleeced by the local police franchisee. Many of us drive motorcycles or scooters here, and it is dangerous getting on the roads with some of these other drivers. Getting on a scooter, or a motorcycle anywhere in Thailand, much less Phuket, Phangan, Dark Tao, or Samui without a very good helmet, is like playing Russian Roulette with three or four bullets in the chamber. It is absolutely asking for problems. The degree of recklessness here is astounding. And many foreigners come here thinking "how much trouble could I get in on a little scooter, on a tropical island"? Well, the answer is alot. The amount of foreigners who are killed on the Southern islands is staggering. Most are not reported in the media. I had a friend who worked for Samui rescue for many years, and said the numbers were about 30-60 a month, on Samui, Phangan and Koh Tao. The official number is about 3 a month. Rider beware. Use as good a helmet as you can afford, and do not use these eggshells pieces of crap. They crack at the first impact, and what lies underneath them? Your skull, which is very delicate. I have been riding bikes for 55 years. Without any serious accidents. A few minor ones over the years. Riding a bike here is very dangerous. If not the highest, one of the highest fatality rates in the world. And an accident here can be very costly, to your person. Just ask yourself- do I have enough problems already, without a broken skull, or smashed head, or face injury, or lost eye? I have three friends who have been in motorbike accidents on Samui within the last several years. One still cannot walk, or talk or function on her own, from a motorbike accident, where she hit her head on the pavement going only 20 kph. The other one has lost alot of his mental capacity after hitting his head. He insisted for years he would never wear a helmet. Now, he seems 15 years older. The third one is a close friend, who was hit by a sidecar, and nearly lost his leg. 11 operations later, he can walk, but with a limp, and the leg has caused him constant problems, many years later. And he admits he was not driving carefully, or defensively.