Table C1.2.

Typical national standards for low-volume roads in mountainous terrain

AttributeNepalVietnamLaosEthiopia
AADT100–40050–300100–300100–200
Carriageway width (m)3.53.55.57.0
Shoulder width (m)0.51.50.50.0
Max grade (%)121299
Design speed (km/h)n/a252040
Minimum horizontal curve radius (m)12.5152050