The phrase "road shoulder" refers to the area at the side of a road, usually covered in gravel or concrete, where vehicles can pull over or stop in case of an emergency or to give way to other traffic. Full definition
As long as your cousin isn't using the bike for jumps and stunts, and is just riding it on roads this shouldn't pose a problem. (mechanics.stackexchange.com)
The yellow brick road should really lead to this this gorgeous emerald green necklace! (thevintagehoneyshop.com)
However, under a quarter thought that people driving on busy roads should pay more and a similar proportion said that people driving at busy times should pay more. (politics.co.uk)