this line lengthens and the gaps shorten, it means that there is a  hazard ahead. Do not cross it unless you can see the road is clear  and wish to overtake or turn off.  128. Double white lines where the line nearest to you is broken.   This  means you may cross the lines to overtake if it is safe, provided you  can complete the manoeuvre before reaching a solid white line on  your side. White direction arrows on the road indicate that you  need to get back onto your side of the road.  129. Double white lines where the line nearest you is solid.   This  means you MUST NOT   cross or straddle it unless it is safe and you  need to enter adjoining premises or a side road. You may cross the  line if necessary, provided the road is clear, to pass a stationary  vehicle, or overtake a pedal cycle, horse or road maintenance  vehicle, if they are travelling at 10 mph (16 km/h) or less.  130. Areas of white diagonal stripes   or chevrons painted on the road.  ● If the area is bordered by a broken white line, you should not  enter the area unless it is necessary and you can see that it is  safe to do so.  ● If the area is marked with chevrons and bordered by solid  white lines you MUST NOT enter it except in an emergency.  These are to separate traffic lanes or to protect traffic turning right.  Laws MT(E&W)R regs 5, 9, 10 & 16, MT(S)R regs 4, 8, 9 & 14,  RTA sect 36 & TSRGD 10(1)  131. Lane dividers.   These are short, broken white lines which are  highwaycodeuk.co.uk 70  Laws RTA 1988 sect 36 & TSRGD regs 10 & 26 