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a Includes the 50 States and the District of Columbia.
bUrban other arterial include other freeways and expressways, other principal arterial, and minor arterial. Rural other arterial includes other principal arterial and minor arterial prior to 2009 and other freeways and expressways, other principal arterial and minor arterial for 2009 and later.
cCollector is the sum of major and minor collectors.
KEY: N = data do not exist; R = revised; U = data are not available.
a Carriers operating under 14 CFR 121, all scheduled and nonscheduled service. Since Mar. 20, 1997, 14 CFR 121 includes only aircraft with 10 or more seats formerly operated under 14 CFR 135. This change makes it difficult to compare pre-1997 data for 14 CFR 121 and 14 CFR 135 with more recent data.
b All scheduled service operating under 14 CFR 135. Since Mar. 20, 1997, 14 CFR 121 includes only aircraft with 10 or more seats formerly operated under 14 CFR 135. This...
KEY: N = data does not exist; R = revised; U = data are not available.
a Serious injuries only. See Glossary for definitions
b All service operating under 14 CFR 121 (Scheduled air carriers). Since Mar. 20, 1997, 14 CFR 121 includes only aircraft with 10 or more seats formerly operated under 14 CFR 135. This change makes it difficult to compare pre-1997 data for 14 CFR 121 and 14 CFR 135 with more recent years' data.
c All scheduled service operating under 14 CFR 135 (Commuter air carriers...
KEY: N = data does not exist; R = revised; U = data are not available.
a All services operating under 14 CFR 121 (Scheduled air carriers). Since Mar. 20, 1997, 14 CFR 121 include aircraft with 10 or more seats that formerly operated under 14 CFR 135. This change makes it difficult to compare pre-1997 data for 14 CFR 121 and 14 CFR 135 with more recent data. In 2001, other than the persons aboard the aircraft who were killed, fatalities resulting from the September 11 terrorist acts are excluded. U.S. air carrier figure does not...
KEY: N = data do not exist.
a Includes the 50 states and the District of Columbia. When states did not submit reports, data was estimated by the U.S. Department of Transportation, Federal Highway Administration.