How can I be sure that roundabouts will accommodate large trucks, emergency vehicles and farm equipment?
Design guidelines vary greatly for roundabouts, but their design can certainly take into consideration the corridor’s need for larger overall diameters and larger entry and exit lanes. In fact, the left turn radii are often much larger than at traffic signals. A truck apron, often constructed with a different material or different color material, accommodates wheels of exceptionally large vehicles while visually defining the circle for the average driver.
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