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Traffic congestion
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===United States=== [[File:Traffic Jam,1953.jpg|thumb|upright=1.1|Traffic jam in Los Angeles, 1953]] [[File:Trafficjamoninterstate5atpyramidlake.jpg|thumb|On Fridays in [[California]], [[Interstate 5]] is often congested as Los Angeles residents travel north for the [[Workweek|weekend]].]] [[File:Miami traffic jam, I-95 North rush hour.jpg|thumb|Rush hour traffic in Interstate 95 in [[Miami]]]] [[File:Traffic congestion - US 11E - Morristown, TN.jpg|thumb|Congestion during [[lunch hour]] on [[U.S. Route 11E]] in [[Morristown, Tennessee]]]] The [[Texas Transportation Institute]] estimated that, in 2000, the 75 largest metropolitan areas experienced 3.6 billion vehicle-hours of delay, resulting in 5.7 billion U.S. gallons (21.6 billion liters) in wasted fuel and $67.5 billion in lost productivity, or about 0.7% of the nation's [[Gross domestic product|GDP]]. It also estimated that the annual cost of congestion for each driver was approximately $1,000 in very large cities and $200 in small cities. Traffic congestion is increasing in major cities and delays are becoming more frequent in smaller cities and rural areas. 30% of traffic is cars looking for parking.<ref>{{Cite web |url=http://shoup.bol.ucla.edu/CruisingForParkingAccess.pdf |title=Cruising for Parking |access-date=August 11, 2016 |archive-date=March 15, 2016 |archive-url=https://web.archive.org/web/20160315094950/http://shoup.bol.ucla.edu/CruisingForParkingAccess.pdf |url-status=live }}</ref> According to traffic analysis firm [[INRIX]] in 2019,<ref>{{Cite web|last=Levin|first=Tim|title=The 31 US cities that had the worst traffic in 2019 according to a study|url=https://www.businessinsider.com/us-cities-most-traffic-2019-2020-3|access-date=November 25, 2021|website=Business Insider|language=en-US}}</ref> the top 31 worst US traffic congested cities (measured in average hours wasted per vehicle for the year) were: {| class="wikitable" |+ ! !City !Hours wasted per vehicle !Cost of congestion per driver |- !1 |Boston, Massachusetts |149 hours |$2,205 |- !2 |Chicago, Illinois |145 hours |$2,146 |- !3 |Philadelphia, Pennsylvania |142 hours |$2,102 |- !4 |New York City, New York |140 hours |$2,072 |- !5 |Washington, D.C. |124 hours |$1,835 |- !6 |Los Angeles, California |103 hours |$1,524 |- !7 |San Francisco, California |97 hours |$1,436 |- !8 |Portland, Oregon |89 hours |$1,317 |- !9 |Baltimore, Maryland |84 hours |$1,243 |- !10 |Atlanta, Georgia |82 hours |$1,214 |- !11 |Houston, Texas |81 hours |$1,199 |- !12 |Miami, Florida |81 hours |$1,199 |- !13 |New Orleans, Louisiana |79 hours |$1,169 |- !14 |Seattle, Washington |74 hours |$1,095 |- !15 |Stamford, Connecticut |74 hours |$1,095 |- !16 |Providence, Rhode Island |70 hours |$1,036 |- !17 |San Diego, California |70 hours |$1,036 |- !18 |Austin, Texas |69 hours |$1,021 |- !19 |Sacramento, California |64 hours |$947 |- !20 |Dallas, Texas |63 hours |$932 |- !21 |Denver, Colorado |63 hours |$932 |- !22 |Hartford, Connecticut |61 hours |$903 |- !23 |Minneapolis, Minnesota |52 hours |$770 |- !24 |Charlotte, North Carolina |49 hours |$725 |- !25 |San Juan, Puerto Rico |46 hours |$681 |- !26 |Cleveland, Ohio |44 hours |$651 |- !27 |Columbus, Ohio |43 hours |$636 |- !28 |Milwaukee, Wisconsin |41 hours |$607 |- !29 |Detroit, Michigan |39 hours |$577 |- !30 |San Antonio, Texas |39 hours |$577 |- !31 |Boulder, Colorado |37 hours |$548 |} The most congested highway in the United States, according to a 2010 study of freight congestion (truck speed and travel time), is Chicago's [[Interstate 290 (Illinois)|Interstate 290]] at the [[Circle Interchange]]. The average truck speed was just {{convert|29|mi/h|abbr=on}}.<ref>{{cite web | title = Table 3-9. Top 25 Freight Highway Locations by Freight Congestion Index Rating: 2010 | publisher = [[U.S. Department of Transportation]] | year = 2011 | url = http://www.ops.fhwa.dot.gov/freight/freight_analysis/nat_freight_stats/docs/11factsfigures/table3_9.htm | access-date = July 26, 2013 | archive-date = June 6, 2013 | archive-url = https://web.archive.org/web/20130606100926/http://www.ops.fhwa.dot.gov/freight/freight_analysis/nat_freight_stats/docs/11factsfigures/table3_9.htm | url-status = dead }}</ref>
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