Traffic flowing in the opposite direction from normal, especially a temporary lane reversal on a highway to handle traffic from one direction.
From 'contra-' (against) + 'flow' (from Old English 'flowan'). Modern compound term created for traffic management, describing flow going against established patterns.
Contraflow is a British traffic innovation that saved lives during rush hour—by reversing lanes on one side of the road during peak times, they could direct more cars away from congestion.
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