In accordance with Section 45 (6) of the German Road Traffic Act (Straßenverkehrsordnung -StVO), contractors must obtain a traffic order from the relevant road traffic authority before starting work that affects road traffic (this also includes the sidewalk). In this order, the road traffic authority specifies how the work site is to be cordoned off and marked and how traffic is to be restricted, directed or regulated. Contractors must enclose a traffic sign plan with the application.