One major concrete road currently exist which connect the North end of Sairee Beach where to biggest concentration of hotels in Koh Tao is located with Chalok Baan Kao in the South, passing the main village of Mae Haad and the pier in the middle.
Smaller roads divert from the main road, most of which are dirt roads leading to the rocky inner parts of the island which may be a bit of a challenge to navigate. Upon your arrival at the pier there will be Songthaew taxis offering transportation to your resort and you will also find them parked in Mae Haad Village as well as Siree Village. Make sure to negotiate a fee before using their services since they do tend to be a little expensive in relation to the distance they travel.
ScootersScooters are everyone's choice and there are also dirt bikes for rent. Several places in Sairee, Mae Haad and Chalok Baan rent bicycles, scooters and dirt bikes, as does most resorts. Drive slowly and be careful of the steep hills and sharp bends.
SongthaewsSongthaews are a pick-up trucks with 2 rows of seats in the back. They are convenient and cheap and probably what you will be traveling with from the pier. It is also the best option to get around without having to risk it on a scooter.
Longtail BoatsTraditional longtail boats operate around the island and is a scenic means of transportation. Its a great way explore island shores and see the many beautiful hidden beaches and bays. You can also charter one for snorkeling trips.