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A speed cushion is a type of traffic calming device — similar to a speed hump — but with gaps in between so that emergency vehicles like fire trucks or ambulances can pass through without slowing down, while regular cars still have to slow down.
Cars have to slow down because their wheels hit the bumps.
Buses or emergency vehicles (with wider wheelbases) can straddle the gaps and avoid the bumps.
This way, traffic is calmed without delaying emergency services.
Traffic rules
