Rule 271
You MUST NOT stop on any carriageway, emergency area, hard shoulder, slip road, central reservation or verge except in an emergency, or when told to do so by the police, traffic officers, an emergency sign or by red flashing light signals. Do not stop on any part of a motorway to make or receive mobile telephone calls, except in an emergency. Laws MT(E&W)R regs 7 , 9 , 10 & 16 as amended by MT(E&W)(A)(E)R , MT(S)R regs 6(1) , 8 , 9 & 14 , PRA sect 41 & sched 5(8) , RTA 1988 sects 35 , 36 & 163 as amended by TMA sect 6 , & CUR reg 110 as amended by CUR (A)(No4)R