The 'rotary' (roundabout) intersection works on the principle of:
Choose the correct answer
All traffic must stop at signals before entering
Weaving — all vehicles merge and diverge around a central island; conflict-free intersection with yield rule
Traffic crossing each other at right angles with signals
All vehicles follow the same lane without merging
Correct Answer
B. Weaving — all vehicles merge and diverge around a central island; conflict-free intersection with yield rule
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Rotary/roundabout: all vehicles weave (merge + diverge) within a one-way circulatory roadway. No signals. Yield to circulating traffic (give-way rule). Eliminates: direct right-angle and head-on conflicts (most severe). Conflict types: merging and diverging (less severe). Advantages: no delay at low volumes, no red-light running, reduces severe accidents. Disadvantages: capacity limited, pedestrian difficulty, large land area. Mini-roundabouts: urban areas.
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