Driveway Markings
Seattle Municipal Code 11.72.110 - Driveway or alley entrance
"No person shall stand or park a vehicle in front of a public or private driveway within a street or alley or in front of or in an alley entrance or within five feet (5') of the end of a constructed driveway return or alley entrance return, or if none, within five feet (5') of the projection of the edge of the driveway or alley."
Seattle Municipal Code 11.72.120 - Driveway - Painted curb
"The prohibited area for driveway returns described in Section 11.72.110 may be maintained with traffic yellow paint by the property owner or occupant."