Research on factors affecting highways passing through mountain and mountain areas Sirojiddin Yadgarov, Matjon To’xtayev, Iftixor Xoshimov and Akmalxon Yuldoshev E3S Web of Conf., 401 (2023) 01069 Published online: 11 July 2023 DOI: 10.1051/e3sconf/202340101069