1. Effects of road marker posts
Roadway markers are a type of road sign used to determine the width limit of road land (including road land and road safety corridors) according to the provisions of the Road Traffic Law.
2. Structure of landmark piles
The landmark pile is cast in unreinforced concrete with dimensions (20 cm x 20 cm x 100 cm). Each edge of the pile is beveled 10°, the part buried in the ground is 50 cm long, with concrete to cover the base of the pile. In special cases, there is a separate design but must ensure width to write letters.
On the front of the pile (the side facing the road) is written the word “BOUNDARY MARK”, sunken letters, red letters 6 cm high, 1 cm wide, 3 mm – 5 mm deep into the concrete;
The pile is painted white. The top part is 10 cm high (from the top of the column down) painted red;
Details are specified in Appendix I of National Technical Regulation QCVN 41:2019/BGTVT on Road Signs.

3. Regulations on placing boundary markers
Roads passing through densely populated areas, towns, villages, hamlets: on average, a pole is placed on each side of the road every 100 m.
The road passes through fields and low hills, outside densely populated areas, depending on the specific terrain, the distance of the columns varies from 200 m to 500 m.
In high mountainous areas, only place representatives in a few locations to help manage road safety corridors.
4. Other regulations
Road management units are responsible for setting road markers and handing them over to the local commune-level People’s Committee for management according to regulations. For new construction projects, the investor directs the construction unit to fully install road markings and prepare documents. After completing the project, they must hand over the completed documents including road marking records. identify road safety corridors for the road management unit and the local commune-level People’s Committee to manage according to regulations;
Road boundary markers on roads must be shown and established on a straight map at a scale of 1/10,000.