What is a Dual Carriageway?
According to Clause 6 Article 3 of Circular 31/2019/TT-BGTVT, the regulations are as follows:
A dual carriageway is a road where the directions of travel are delineated by a central reservation (if the separation is only by painted lines, it is not considered a dual carriageway).
Above is the definition of a dual carriageway according to the current regulations.
Respectfully!

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