Emergency stop lane design on national road in West Sumatra (case study: Panorama 1 Sitinjau Lauik)Hazmal Herman, Bayu Budi Irawan, Surya Maiyora Wijayanti and Darwizal DaoedE3S Web Conf., 464 (2023) 11008DOI: https://doi.org/10.1051/e3sconf/202346411008