Correct answer
Actual speed, visibility, grip, road surface and vehicle braking conditions.
Actual travelling speed, visibility, grip and road-surface condition, together with braking conditions and your vehicle’s characteristics and load. Article 54(1) emphasises speed, grip and braking; the road’s maximum limit does not replace the speed actually being driven. One fixed number or speed alone is insufficient in every situation. Anticipate other users’ behaviour and observe applicable additional minimum gaps, increasing the margin when conditions require it.
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Speed alone, disregarding grip and braking.
Only the road’s maximum limit, even when travelling slower.
Actual speed, visibility, grip, road surface and vehicle braking conditions.
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