Roundabouts

» Kurumi's Field Guide to Interchanges    Descriptions and diagrams of many types.    http://www.kurumi.com/roads/interchanges/

» 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

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

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

» 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/

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

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

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

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

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

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

» 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/

» 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/

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

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