Correct answer
At least 70 metres.
Sign R-300 prohibits travelling without keeping at least the indicated distance from the vehicle ahead: 70 metres on this sign, except when overtaking. It is a minimum, not a maximum. You must also keep enough distance to stop without collision, taking account of speed, grip and braking capability; a larger margin may be necessary.
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Less than 70 metres.
A maximum of 70 metres.
At least 70 metres.
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Sign R-300: establishes a minimum separation
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