N.Y. Veh. & Traf. Law § 1215

§ 1215. Driving on mountain highways. The driver of a motor vehicle\ntraveling through defiles or canyons or on mountain highways shall hold\nsuch motor vehicle under control and as near the right-hand edge of the\nhighway as reasonably possible and, upon approaching any curve where the\nview is obstructed within a distance of two hundred feet along the\nhighway, shall give audible warning with the horn of such motor vehicle.\n