I know what dual carriageways look like, the road in question was a narrow (no room to overtake a push bike), winding steep road. I find it difficult to believe that such a road would have a speed limit of 70mph. Just because there is a national speed limit for certain kinds of roads, doesn`t mean they always have that limit. Dunkenhalgh Way for example is a dual carriageway but 50mph not 70mph.
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