blank billboard (city advert)

6x3 add advert advertise advertisement advertising advertistment art background banner billboard black blackboard blank board book brand built bus business chalk chalkboard city commercial construction design draw drawing educate education empty equipment fake frame horizontal illuminated illustration image lamp large lectures lesson light list marker marketing menu message nobody noticeboard object outdoors painting panel people pos poster posting price promo promote promotion sale scene school shape sign single stand stop stopper street unfinished urban white