Editing Diamond interchange (section)

=== Tight diamond ===
A '''tight diamond interchange''' ('''TDI'''), also known as a '''compressed diamond interchange''' or a '''tight urban diamond interchange''' ('''TUDI'''), is sometimes used in areas where there is insufficient [[Right-of-way (transportation)|right-of-way]] for a standard diamond interchange. The pair of intersections where the ramps meet the minor road are closely spaced.<ref name="FHWA 9">{{cite web |author= Staff |publisher= [[Federal Highway Administration]] |url= https://www.fhwa.dot.gov/publications/research/safety/09060/009.cfm |work= Alternative Intersections/Interchanges: Informational Report (AIIR) |id= FHWA-HRT-09-060 |title= Chapter 9: Other Interchange Configurations |date= April 2010 |access-date= October 8, 2012 }}</ref><ref>{{cite web |author= Staff |publisher= Federal Highway Administration |url= https://www.fhwa.dot.gov/publications/research/safety/04091/10.cfm |work= Signalized Intersections: Informational Guide |id= FHWA-HRT-04-091 |title= Chapter 10: Alternative Intersection Treatments |date= August 2004 |access-date= October 8, 2012 }}</ref> This spacing forces the turn lanes for each direction to run beside each other, causing the minor road to be wider than it would be if it were a standard diamond.{{Cn|date=October 2022}} [[Caltrans]] classifies this type as Type L-1.<ref name=":0">https://dot.ca.gov/-/media/dot-media/programs/design/documents/chp0500-032020.pdf {{Bare URL PDF|date=March 2022}}</ref>