Afghanistan

The Grand Trunk Road is one of the of South Asia's oldest and longest major roads. The road, often called as the "Gernaili Sadak" (the Generals' Road) and Sadak-e-Azam ('The Grand Road') covers a distance of over 2,500 kilometres (1,600 mi).
Hajigak Pass is a high mountain pass at an elevation of 3.475 m (11,401 ft) above the sea level, located in Bamiyan Province in central Afghanistan.

Kabul-Jalalabad Highway is a section of A01 national highway, with a length of 143km, linking Kabul and Jalalabad, Afghanistan. This road follows the Kabul River Gorge for 64 kilometres (40 mi), in Taliban territory. The two-lane Kabul Gorge highway runs along 600 metre-high cliffs. Fatal traffic accidents often occur in this area, mainly due to reckless driving.
Shibar Pass is a high mountain pass at an elevation of 3.000 m (9,843 ft) above the sea level, located in the Koh-e-Baba mountains of central Afghanistan.

The historical Pamir Highway, officially called M41, is an excellent challenge for a 4x4 adventure travelers. Most of the road is paved, except for the mountain passes, and the length of the road is 2.038 km kilometers linking Termez (Uzbekistan) and Kara-Balta (Kyrgyzstan) going through the Pamir Mountains. The road is heavily damaged in places by erosion, earthquakes, landslides, and avalanches.
Unai Pass is a high mountain pass at an elevation of 3.000m (9,843 ft) above the sea level, located in the Sanglakh Range, in Afghanistan.

The Salang Pass is a high mountain pass at an elevation of 3,878 m (12,723 ft) above the sea level, located in the Hindu Kush, a mountain range that stretches between central Afghanistan and northern Pakistan. The pass is the major mountain pass connecting northern Afghanistan and Kabul province, with further connections to southern Afghanistan and Pakistan.
Tera Pass is a high mountain pass at an elevation of 9,498 ft (2.895 m) above the sea level, located in Afghanistan.

With everything that’s going on in Afghanistan at the moment, you’d imagine that there’s a fair few dangerous roads over there and you’d more than likely be right! The Kabul-Kandahar Highway part is a 483-kilometer (300-mile) road linking Afghanistan's two largest cities, Kabul and Kandahar.
Saricha Road is an extreme drive in north-eastern Afghanistan. Expect a rough gravel road and driving only in 1st and 2nd gear. Very steep climbs/descents with narrow hairpins in one of the most beautiful, but isolated and rugged landscapes on Earth.

The Khost-Gardez Pass, frequently abbreviated as the K-G Pass, is a high mountain pass at an elevation of 9,413ft (2.869m) above the sea level, located in the Hindukush Mountains, in Afghanistan.
The Eshkashem - Gaz Khan road, part of The Wakhan corridor, is a high mountain road located in the Wakhan walley of Badakhshan Province, in north-eastern Afghanistan running entirely over 2.700m above the sea level.
Lataband Pass, also known as Kotal-e Lataband, is a high mountain pass at an elevation of 2.499 m (8,199 ft) above the sea level, located in the Karkacha hills between Seh Baba and Butkhak in the Hindukush Range, in Afghanistan.
Located in Baghlan Province, in the north-eastern Afghanistan, the road linking Dowshi (also known as Dushi) and Puli Khumri is a very scenic journey.
Tangi Tashkurgan is an amazing gorge located in Balkh province of northern Afghanistan.
Pazhuk Pass is a high mountain pass at an elevation of 3.160m (10,367 ft) above the sea level, located in in north-eastern Afghanistan.
Dorah Pass is an international high mountain pass at an elevation of 14,000 feet (4.300 m) above the sea level, located on the border of Afghanistan and Pakistan.
The Anjuman Pass is a high mountain pass at an elevation of 4.430 m (14,534ft) above the sea level, located in Badakhshan Province, in north-eastern Afghanistan. The road to the summit (or lack there of) is extreme.
The Yaghurda Pass is a high mountain pass at an elevation of 3.525m (11,564ft) above the sea level, located in Badakhshan Province, in north-eastern Afghanistan. Avoid driving in this area if unpaved mountain roads aren't your strong point. Stay away if you're scared of heights.
Khedir Pass is a high mountain pass at an elevation of 3.700m (12,139ft) above the sea level, located in Daykundi, in the central part of Afghanistan.