The driver of a motor vehicle traveling on mountain highways shall hold that motor vehicle under control and as near the right-hand edge of the highway as reasonably possible and, upon approaching any curve where the view is obstructed within a distance of two hundred feet (200′) along the highway, shall give audible warning with the horn of the motor vehicle.
Driving on mountain highways
Tenn. Code Ann. § 55-8-166, under Operation of Vehicles — Rules of the Road.
Tenn. Code Ann. § 55-8-166