Mathematical model of crossing of discrete snow obstacles Vladimir Makarov, Dmitriy Belyaev, Alexey Papunin, Anton Klyushkin, Vyacheslav Ruzhev and Vladislav Gubarev E3S Web Conf., 383 (2023) 02016 Published online: 24 April 2023 DOI: 10.1051/e3sconf/202338302016