A national secondary road (Irish: bóthar náisiúnta den dara grád) is a category of road in Ireland. These roads form an important part of the national route network but are secondary to the main arterial routes which are classified as national primary roads.
A national secondary road (Irish: bóthar náisiúnta den dara grád) is a category of road in Ireland. These roads form an important part of the national route network but are secondary to the main arterial routes which are classified as national primary roads.
Source: Wikipedia "National secondary road" · CC BY-SA 4.0
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