01 - Spacing Requirements 03 - Shoulders 06 - Shoulder, Reduced Lane 10 - Lane Closure, Flaggers 11 - Lane Closure, Low Volume 13 - Temp Road Closure, Flaggers 15 - Center of Road, Low Volume 18 - Lane Closure, Self Regulating 20 - Detour 28 - Sidewalk Closure 29 - Crosswalk, Pedestrian Detour 101...