Highways Act Orders and Schemes

3.12 Slip roads (connecting roads) should be shown from the point where they diverge
from the main line. The starting point should be the highway boundary not the
carriageway boundary.
Treatment of junctions
3.13 Where the motorway ends, the black line should continue as far as the point
where the Motorway Regulations will end. This is normally the back of the verge
of the side road. At motorway to motorway junctions, the links - including any
circulatory junctions - should be treated as slip roads.
Numbering and lettering
3.14 The start and end points of the motorway should be lettered A and B. Where
there are a number of Sections, the lettering will continue C - D, E - F etc. Slip
roads will be numbered.
New bridges over Navigable Waters and
Diversion of Navigable Waters
3.15 Guidance on plans for bridging navigable waters and for diversion of navigable
waters is given in Section 6.
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