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1. Motorways have a national speed limit of 70mph. Where the motorway is street lit there is no requirement to place repeater signs.
2. When you join a motorway on an entry slip road, the start of motorway regulations is displayed by a sign that has a white picture of the motorway, blue background and white border and number of the motorway, this informs the driver that motorway regulations apply including the national speed limit of 70mph.
3. If however a limit that relates to the all purpose road is lower than the national limit eg 40 or 50mph extends onto the slip road beyond the point that motorway regulations begin then repeater signs are necessary. There must be a repeater sign located on the sign that informs the driver that motorway regulations begin as mentioned earlier. When the speed limit on the motorway changes to the national limit then 2 x national speed limit signs must be erected on either side of the slip road.
4. When the driver leaves the motorway, if the all purpose road that you are joining has a lower speed limit than the national limit, then speed limit signs informing you of the limit on the all purpose road are required on each side of the slip road and repeater signs thereafter if required - tables--signs (2)
5. If you are leaving the motorway on a slip road and the street lighting extends to beyond the point where the motorway regulations end, if the road is subject to the national speed limit then derestriction repeater signs will be required starting at the first lamp column following the end of motorway restrictions continuing on for the length of the street lighting.
6. The driver is informed of the end of motorway regulations by a sign on the nearside that has a blue background with a white border and picture of a motorway in white.
7. Where the national speed limit applies on the motorway and also on the all purpose road you are joining and there is no street lighting then the only sign that is required is the end of motorway sign described above.
8. Where repeater signs are used on motorways (generally on the slip roads or link roads) then the size and spacing is the same as for dual carriageways.
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