Highway-Intersections.net
- Compendium of map images from various European countries.
- http://www.highway-intersections.net/

The Parallel Flow Intersection
- A specialized intersection. Page includes diagrams and research.
- http://www.quadranteng.com/

US Highway Interchange Browser
- Covers Michigan and North Carolina.
- http://roadgeek.filpus.org/Int/

Highway Heaven Blog
- Includes aerial photographs and commentary about certain features.
- http://www.triskele.com/highway/category/interchanges/

Interstate Interchange Browser
- Uses Google Maps to locate every interchange on the U.S. Interstate system.
- http://www.m-plex.com/roads/cmap/int/

Interchanges
- Page describing types found in the United Kingdom. Includes a link to the Bad Junctions page.
- http://www.cbrd.co.uk/reference/interchanges/

Continuous Flow Intersections
- Engineering firm page illustrating the connections in this feature. Includes illustrations and a video demonstration.
- http://www.abmb.com/cfi.html

Images of Britain - Spaghetti Junction
- The M6 at the A38(M) in Birmingham.
- http://www.gayne.co.uk/iob/eng/wmids/ce00007.htm

WhereRoadsMeet
- Contains aerial photographs and descriptions of unusual or complicated facilities in the United States.
- http://whereroadsmeet.8k.com/

Highway Feature of the Week
- Large archive of maps and descriptions of unusual or complicated facilities, primarily in the United States.
- http://www.gribblenation.com/hfotw/

Unusual Interchanges
- Diagrams and commentary of various ones in the East-Central U.S.
- http://www.lostagain.net/unint/

Michigan Left Turn
- Describes how this unusual intersection feature works, including history.
- http://www.michiganhighways.org/indepth/michigan_left.html

Interchange of the Week
- Detailed entries for locations in New York State, using official state aerial photography.
- http://www.empirestateroads.com/week/

Museum of Dumb Highway Design
- Aerial photos of and commentary on various interchanges which the author finds unusual or substandard.
- http://www.weathergraphics.com/tim/dumbroad/

California Freeway Interchanges
- Photographs from around the state.
- http://members.cox.net/mkpl/interchange/interchange.html

An VRML rendering of the 15-91 interchange, Corona California.
- A 4-level stack with one loop. Requires a VRML plugin to view.
- http://interchange.tvheaven.com