Based on a long-term mapping of the Z3 traffic facilities in Prague, the individual signs were collected and exchanged for brand new ones. The signage has a limited durability as its reflectance decreases with time. Almost a quarter of the collected signs were already outdated. The exchanged signs thus have a higher reflectance, and the restoration of traffic signs therefore demonstrably increased road safety in Prague. The road work took place during the whole summer of 2015. Equipped with orange vests, Epos 257 and his team became a natural component of the roads as maintenance workers.