251. 路面の浮き砂利
路面の浮き砂利は、道路工事や表面処理後などに路面へ残る小石や砂利です。タイヤグリップを低下させ、制動距離を増やし、通過車両によって飛び上がってフロントガラスや他車を傷つけることがあります。減速し、車間距離を増やし、急な加速、制動、操舵を避け、他車のタイヤから石が飛ぶ可能性がある場合はさらに間隔を取ります。
What are loose chippings?
Loose chippings are small stones or pieces of gravel lying loose on the road surface, often after resurfacing or road maintenance.
Why are loose chippings dangerous?
Loose stones can reduce tyre grip and vehicle control and may be thrown into the air by tyres, potentially damaging windscreens or other vehicles.
How should you drive on loose chippings?
Reduce speed, increase your following distance and avoid sudden acceleration, braking or steering. Keep additional space from other vehicles where stones may be thrown up by their tyres.
Can loose chippings increase stopping distance?
Yes. Loose material between the tyres and road can reduce available grip, making braking and steering less effective.
Why are loose chippings common after roadworks?
Some road-surfacing methods use a layer of small stone aggregate. Until the material settles or excess stones are removed, loose chippings may remain on the surface.
Can loose chippings damage a vehicle?
Yes. Stones thrown up by tyres can cause chips or cracks in windscreens, headlights and vehicle paintwork.

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