Based on the clue 'a road scholar is retired on this coasting until a...', what is the answer?

Based on the clue 'a river on the nicaragua honduras border or ms cha...', what is the answer? Based on the clue 'a river steamer equipped with a theater an acting...', what is the answer? Based on the clue 'a river that empties into the adriatic or an autho...', what is the answer? Based on the clue 'a riverboat captain bogart a missionary hepburn u...', what is the answer? Based on the clue 'a road sign inspired the name of this band from th...', what is the answer? Based on the clue 'a road sign showing the back of a car with two wav...', what is the answer? Based on the clue 'a road surface such as asphalt', what is the answer? Based on the clue 'a robbery at gunpoint or an adhesive air freshener', what is the answer?