Explanation: You mustn't stop on the hard shoulder, except in an emergency. Never use it to have a rest or a picnic, to pick up hitchhikers, to answer a mobile phone or to check a road map. You mustn't drive back along the hard shoulder if you go past the exit you wanted.
Category: Band 1 road procedure
References: The official DVSA guide to driving: section 11, Highway code: rule 264