Your comments about roundabouts being safer would only be correct anywhere but Doha. The people in this city do not understand the concept. If you wish to travel at a constant 120kph through the city roundabout lanes become insignificant. You simply take the direct path. Outside lane to inside lane to outside lane, becomes a straight line. If you can start a special traffic school which will educate the local drivers about Roundabout driving, welcome to Doha.