For commercial truck drivers such as Charles Ryser, when the wheels aren’t turning, you aren’t earning. Until July, Ryser and his father – who drive in a team from a base in Forsyth, Ga. – worked on their own terms. Charles took the day shift, while his father, David Ryser, got behind the wheel at dusk. But because of a Department of Transportation attempt to cut down on fatigued drivers, Ryser now has to comply with rules that lead to more downtime and force him to switch shifts regularly with his father, breaking him from his rhythm.