Correct answer
Enough to stop without colliding if the vehicle ahead brakes suddenly.
Enough to stop without colliding if the vehicle ahead brakes suddenly, considering speed, grip and braking. With more than one lane in the same direction, the additional duty to leave a gap for a following vehicle to overtake safely does not apply. There is no universal 50-metre minimum here.
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Always exactly 50 metres, regardless of speed and grip.
A gap also letting a following vehicle overtake: this extra duty always applies with three lanes.
Enough to stop without colliding if the vehicle ahead brakes suddenly.
The real exam in English is a translation of the Spanish original; compare both here.
Show the Spanish original
En una autopista con tres carriles para cada sentido, fuera de túneles y pasos inferiores, ¿qué distancia debe mantener un turismo con el vehículo de delante?
- Siempre exactamente 50 metros, con independencia de velocidad y adherencia.
- La suficiente para detenerse sin colisionar si el de delante frena bruscamente.(Correct answer)
- Una distancia que permita también que quien le sigue adelante: esta obligación adicional rige siempre con tres carriles.
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