Methodology of research on the impact of ITS services on the safety and efficiency of road traffic using transport modelsJacek Oskarbski, Lucyna Gumińska, Tomasz Marcinkowski, Krystian Mowiński, Izabela Oskarbska, Grzegorz Oskarbski, Marcin Zawisza and Karol ŻarskiMATEC Web Conf., 231 (2018) 02008DOI: https://doi.org/10.1051/matecconf/201823102008