Actually, these are the 4 most dangerous roads in the world plus 1 hiking trail.

1)  North Yungas Road in the Bolivian Andes
2)  The Guoliang Tunnel in the Taihang mountains
3)  An insane hiking trail on Mt.Huashan in China
4)  The Russian Siberian Road to Yakutsk
5)  The Taroko Gorge Road in Taiwan



100-200 people perish on North Yungas Road in Bolivia every year.

See pictures of all the roads and their descriptions here:
http://www.linkinn.com/wiki_101.php?add=wiki&id=434&select=Pictures

Using old roads that were designed for Humans and Animals ONLY for cars and trucks, is Scary Anyway.

Have you seen any of the OLD city roads that were designed for the Model T...and the city hasnt changed it?
Then watch a Truck TRY to get down the street.

I have been on some roads in the Hindu Kush range in northern Pakistan that looked exactly like the road in that picture with literally a thousand foot drop on one side -- and it was two lane!   

Holy smokes that was scary.

there USEd to be a few cliff face runs in the USA...But they got Fixed...
Last one I know of is the Grand canyon, and its NOT for cars...