^Although Arkansas highways normally terminate when intersected by a route of greater importance, Highway 463's history as a former alignment of US 63 is reflected when intersecting state highways of a lesser number. Although routes of a lower number and the same class usually take priority at a concurrency, AR 463 still has preference to state routes but not US routes along its path.
^ abPlanning and Research Division (2010). "Arkansas Road Log Database"(Database). Arkansas State Highway and Transportation Department. Archived from the original on 23 June 2011. Retrieved June 9, 2011.
^General Highway Map(PDF) (Map) (Craighead County ed.). Arkansas State Highway and Transportation Department. Retrieved July 18, 2011.