highway d18bis road sign indicating rouffach with lush green surroundings and a partly cloudy sky near mulhouse in haut-rhin,

highway d18bis road sign rouffach mulhouse hautrhin city entrance alsace france green greenery trees signs travel transportation destination route freeway direction summer scenic journey landscape nature driving trip french roads european region signpost markings rural outdoor countryside exit network adventure asphalt safety urban planning infrastructure public transport cloudscape day system motorway