THE SPEED BEHAVIOR OF CZECH PROFESSIONAL DRIVERS ACCORDING TO ORDINARY VS. VARIABLE SPEED LIMIT SIGNS: AN ON-ROAD AND DRIVING SIMULATION-BASED COMPARISON. PC [Internet]. 2019 Dec. 30 [cited 2026 Mar. 5];14(4):35-43. Available from: https://pernerscontacts.upce.cz/index.php/perner/article/view/437