État de la chausséeJapon
Règles de circulation
Japon
57. État de la chaussée
Un avertissement concernant l’état de la chaussée indique que la route plus loin peut être irrégulière, endommagée ou en mauvais état et affecter la stabilité, la direction ou le freinage du véhicule. Le danger peut comprendre des bosses, affaissements, nids-de-poule, revêtement dégradé ou autres irrégularités.
Les conducteurs doivent réduire leur vitesse si nécessaire, maintenir une distance de sécurité et éviter les mouvements brusques de direction ou de freinage sur une surface irrégulière. La signification et l’apparence exactes du panneau varient selon les pays ; les conducteurs doivent donc respecter la signalisation et la réglementation locales.
What does a road surface warning mean?
A road surface warning indicates that the surface ahead may be uneven, damaged or otherwise capable of affecting the safe movement of vehicles.
What kinds of road defects can the warning indicate?
Depending on the country, it may warn of bumps, depressions, potholes, broken pavement, uneven repairs or other surface irregularities.
What should you do when you see a road surface warning?
Reduce speed where necessary, increase your awareness of the road ahead and be prepared for changes in the vehicle's stability or direction.
Does a road surface warning impose a specific speed limit?
Not normally. A warning sign alerts drivers to a hazard rather than establishing a numerical speed limit. A separate speed-limit sign may be used where a particular maximum speed is required.
Should you brake before reaching an uneven road surface?
Where slowing is necessary, it is generally safer to reduce speed before reaching the irregular surface rather than braking sharply while travelling over it.
Why can an uneven road surface be dangerous?
A severe surface irregularity can affect tyre contact, steering, braking and vehicle stability. It can also damage tyres, wheels or suspension components.
Are motorcycles and bicycles particularly affected by uneven surfaces?
Yes. Two-wheeled vehicles can be particularly sensitive to potholes, ridges and other irregularities because these hazards may disturb their balance or alter their direction suddenly.
Is an uneven-road warning the same as a slippery-road warning?
No. An uneven-road warning concerns the physical condition or shape of the road surface. A slippery-road warning concerns reduced tyre grip caused by the surface or conditions such as water, ice, mud or other substances.
Can the warning apply over a longer section of road?
Yes. A supplementary sign may indicate the distance to the hazard or the length of the affected section, depending on the country's traffic-sign system.
Should you increase your following distance on a poor road surface?
Yes, when conditions require it. Additional distance provides more time to react if the vehicle ahead slows suddenly to avoid a pothole or other surface defect.
