It is the main route into the Central Highlands and to Da Lat from Ho Chi Minh City.

Just a few km further east, the Ho Chi Minh City–Long Thanh–Dau Giay Expressway branches off National Route 1A.

The road leads north through densely populated countryside with rubber plantations, fruit orchards and farmland, on the banks of Tri An Reservoir.

In Đạ Huoai District, the road leads through a pass, entering the highland around Bảo Lộc.

Further north, the road passes through Liên Khương, Đức Trọng District, where the Dau Giay-Dalat Expressway branches off.