the Speed limits table)  Law RTRA sects 17, 86, 89 & sch 6  Laws MT(E&W)R regs 6, 8 & 10 & MT(S)R regs 4, 5, 7 & 9  highwaycodeuk.co.uk 135  264. You should always drive in the left-hand lane when the road  ahead is clear. If you are overtaking a number of slower-moving  vehicles, you should return to the left-hand lane as soon as you are  safely past. Slow-moving or speed-restricted vehicles should always  remain in the left-hand lane of the carriageway unless overtaking.  You MUST NOT   drive on the hard shoulder except in an emergency  or if directed to do so by the police, HA traffic officers in uniform or  263. You MUST NOT   reverse, cross the central reservation, or drive  against the traffic flow. If you have missed your exit, or have taken  the wrong route, carry on to the next exit.  262. The monotony of driving on a motorway can make you feel  sleepy. To minimise the risk, follow the advice in Rule 91.  261. You MUST NOT   exceed 70 mph (112 km/h), or the maximum  speed limit permitted for your vehicle. If a lower speed limit is in  force, either permanently or temporarily, at road works for  example, you MUST NOT   exceed the lower limit. On some  motorways, mandatory motorway signals (which display the speed  within a red ring) are used to vary the maximum speed limit to  improve traffic flow. You MUST NOT   exceed this speed limit.  ● keep a safe distance from the vehicle in front and increase  the gap on wet or icy roads, or in fog (see  Rules 126 and 235).  5.Lane discipline 