Lines are basically at or near bus stops that have parking.
There are a lot of morning lines - primarily in Springfield, Woodbridge, Monclair, and Stafford areas. D.C. This site lists those sites that are ongoing sluglines with parking and some assurance that slugs will get a ride. These sites also have a bus stop as a backup. Drawings are not to scale. SlugVirginia is a trademark of JackLeg Publishing.