Dealership signs are used for either car dealerships or franchises. The latter's signs are nothing too complex, though the name and logo are put on an enormous sign which can be seen from distance. Other signs include details of openings hours and perhaps brief information about the franchise itself.
However, car dealership signs might have more elements. Apart from name and opening hours, signage for all the different brands is essential, together with details as to whether only new cars are sold, or used ones too. If the dealership provides any services, it is important to have a sign for them as well.