Mined roads and ambushes on this section of the road from Saigon to Phnom Penh Cambodia were few. (One is enough if you are in it.) My first thought when I look at this picture is, this is the MAIN ROAD (only one) from the capital of Vietnam to the capital of Cambodia????? Holy Crap Batman!
The road gets worse a few miles west. It turns to low quality dual lane cow paths in less than 5 miles. This red clay section (laterite) was solid when dry but in the wet season the road became a swamp.