Correct answer
4 metres, as a general rule.
It is 4 metres under Annex IX of the General Vehicle Regulations. That annex provides exceptions, such as 4.20 metres for class I buses and 4.50 metres for certain expressly listed vehicles and transport operations. Also observe road-specific limits and the vehicle’s technical conditions; the general rule does not authorise passage where clearance is insufficient.
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4 metres, as a general rule.
2.5 metres.
3 metres.
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