Testing the durability and function of road traffic management devices Łukasz Jeliński, Joanna Wachnicka, Jan Jamroz, Małgorzata Kalisz, Piotr Kaźmierczak, Rafał Lusa and Paweł Skwierczyński MATEC Web Conf., 122 (2017) 02006 Published online: 10 August 2017 DOI: 10.1051/matecconf/201712202006