PPS 3 Access Movement and Parking (Clarification)·Page 7
High Standard Dual Carriageway Definition
A High Standard Dual Carriageway is a dual carriageway with grade-separated junctions or at-grade left-turn only junctions, with no cross-overs on the central median.
A High Standard Dual Carriageway is a dual carriageway with all junctions either 'Grade Separated' or 'at-grade left-turn only'. There are no cross-overs on the central median.
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