Here are some rules and driving tips that you should make yourself aware of before you start your road trip in Rhodes island. Drive on the right-hand side of the road. Use of a mobile phone is illegal whilst driving. It is illegal to have a level of alcohol in the bloodstream of more than 0.05%. The middle lane of a three-lane highway is for passing. Dipped headlights should be used in poor daytime visibility. The use of full beam headlights in towns is strictly prohibited. Traffic already on a roundabout has to stop and give way to traffic entering the roundabout. In Greece it is prohibited to overtake at bottlenecks, humps in the road, on bends, at pedestrian crossings, at junctions and when there is inadequate visibility