Abdualiyev Elerbek Begalievich Tashkent State University of Transport, doctoral student. Mirkhanova Mavzhuda Mikhailovna Tashkent State University of Transport, senior lecturer. Umaraliev Shokhzhakhon Mukhammadruzi ugli Tashkent State University of Transp. 7. TOPOGRAPHIC SURVEY DURING ENGINEERING AND GEODETIC SURVEYS OF RAILWAYS USING A QUADROCOPTER. Inntechcon 2023, 2.