Primary arteries: Kabul–Kandahar Highway, Kabul–Herat Highway, Salang Pass (tunnel at 3,400 m). Many roads unpaved or war-damaged; mountain passes close in winter.
~750 km (466 mi) total. Main line: Hairatan (Uzbek border) → Mazar-i-Sharif → Kabul → Kandahar → Toraghundi (Turkmen border). Limited freight; no regular passenger service. Reconstruction projects ongoing.
Rugged terrain, conflict damage, funding gaps, and security risks hinder network development. International donors (ADB, World Bank, China) fund upgrades, but progress is uneven.