Between 1966 and 1970, this system operated in the same manner and served the same purposes as the much better known Ho Chi Minh Trail (the Truong Son Road to the North Vietnamese) which ran through the southeastern portion of the Kingdom of Laos.
Antara 1966 dan 1970, sistem tersebut mengoperasikan tujuan yang sama dan melayani keperluan yang sama seperti halnya Jalur Ho Chi Minh yang lebih dikenal (Jalan Truong Son menuju Vietnam Utara) yang membentang di sepanjang bagian tenggara Kerajaan Laos.