Report a street light problem Information about how to report a problem with a street light and details about how street lights are maintained. Road signs, markings and bollards Information about how to report a problem with a road sign, marking or bollard and details about how they are maintained. Traffic lights Information about what traffic lights we are responsible for and how to report a fault online. Yellow lines Information about the types of markings, what they mean and how they are enforced. Brown tourist signs Tourist traffic signs are provided to guide visitors along the most appropriate route for the final stages of their journey.