These crashes are eliminated with roundabouts because vehicles travel more slowly and in the same direction .
而环形车道能够避免这种事故的发生,因为在环形车道上车辆行驶的速度较慢,且在行驶方向一致。
The interchange , roundabouts , access roads , visitors centre , employers offices , engineers offices and contractors offices will be constructed on reclaimed land and will need to be designed accordingly .