Task Force on Geometric Design, 2000 (2001). "10.1 – Introduction and General Types of Interchanges". A Policy on Geometric Design of Highways and Streets(PDF). American Association of State Highway and Transportation Officials. p. 10.1-1. ISBN1-56051-156-7. Retrieved July 27, 2021.{{cite book}}: CS1 maint: numeric names: authors list (link)