What is U.S. Route 1?
{{Infobox road |country=USA |type=US |route=1 |map=US-1-map.png |length_mi=2369.49 |length_ref=<ref name=AASHTO>{{cite book |author = American Association of State Highway and Transportation Officials |url = http://cms.transportation.org/?siteid=68&pageid=1760 |title = United States Numbered Highways |edition = 1989 |location = Washington, DC |publisher = American Association of State Highway and Transportation Officials |url-status = dead |archiveurl = https://web.archive.org/web/20070204074242/http://cms.transportation.org/?siteid=68&pageid=1760 |archivedate = February 4, 2007 |df = mdy-all |author-link = American Association of State Highway and Transportation Officials}}</ref> |length_round=0 |established=1926 |direction_a=South |direction_b=North |terminus_a=Fleming Street in [[Key West, Florida|Key West, FL]] |junction={{Plainlist|<!-- limit 11 junctions --> *{{jct|country=USA|I|95}} in [[Miami|Miami, FL]] *{{jct|country=USA|I|10}} in [[Jacksonville, Florida|Jacksonville, FL]] *{{jct|country=USA|I|20}} near [[Aiken, South Carolina|Aiken, SC]] *{{jct|country=USA|I|40}} in [[Cary, North Carolina|Cary, NC]] *{{jct|country=USA|I|85|I|95|US|460}} near [[Petersburg, Virginia|Petersburg, VA]] *{{jct|country=USA|I|64}} in [[Richmond, Virginia|Richmond, VA]] *{{jct|country=USA|I|83}} in [[Baltimore, Maryland|Baltimore, MD]] *{{jct|country=USA|I|76|dab1=east}} in [[Philadelphia|Philadelphia, PA]] *{{jct|country=USA|I|87|dab1=New York}} in [[New York City|New York, NY]] *{{jct|country=USA|I|90|I|93}} in [[Boston|Boston, MA]] }} |terminus_b={{Jct|province=NB|NB|161}} at the [[Fort Kent–Clair Border Crossing]] |states=[[Florida]], [[Georgia (U.S. state)|Georgia]], [[South Carolina]], [[North Carolina]], [[Virginia]], [[Washington, D.C.|District of Columbia]], [[Maryland]], [[Pennsylvania]], [[New Jersey]], [[New York (state)|New York]], [[Connecticut]], [[Rhode Island]], [[Massachusetts]], [[New Hampshire]], [[Maine]] |previous_type= |previous_route= |next_type=US |next_route=2 |nobrowse=1 }} '''U.S. Route 1''' (sometim