U.S. Commuter Air Carrier Fatal Accidents by Defining Event of Operation

KEY: R = revised.

^a 14 CFR 135, scheduled operations. Before Mar. 20, 1997, 14 CFR applied to aircraft with 30 or fewer seats. Since Mar. 20, 1997, 14 CFR 135 includes only aircraft with fewer than 10 seats. This change makes it difficult to compare pre-1997 data with more recent years' data.

^b Includes instructional flights performing turns and agricultural flights for spraying and buzzing (repeated passes over a particular location).

U.S. Air Carrier Fatal Accidents by Defining Event of Operation

^a Carriers operating under 14 CFR 121. Before Mar. 20, 1997, 14 CFR 121 applied only to aircraft with more than 30 seats or a maximum payload capacity of more than 7,500 pounds. Since Mar. 20, 1997, 14 CFR 121 includes aircraft with 10 or more seats that formerly operated under 14 CFR 135. This change makes it difficult to compare pre-1997 data with more recent data. 

^b NTSB changed its reporting of phase of accidents. Data after 2008 is reported by Defining Event associated phase of flight leading to the accident.  Before 2008 data is reported by...

U.S. Commuter Air Carrier Safety Data

KEY: P = preliminary; R = revised; U = data are not available.

^a Air carriers operating under 14 CFR 135, scheduled service. Includes accidents involving all-cargo air carriers when those accidents occurred during scheduled 14 CFR 135 operations. Before Mar. 20, 1997, 14 CFR 135 applied to aircraft with 30 or fewer seats.  Since Mar. 20, 1997, 14 CFR 135 includes only aircraft with fewer than 10 seats. This change makes it difficult to compare pre-1997 data with more recent years' data.

^bTotal fatalities for 1991 on U.S...

U.S. Air Carrier Safety Data

KEY:  N = data do not exist; P = preliminary; R = revised; U = data are not available.

^a Air carriers operating under 14 CFR 121, scheduled and nonscheduled service. Includes all scheduled and nonscheduled service accidents involving all-cargo carriers and commercial operators of large aircraft when those accidents occurred during 14 CFR 121 operations. Since Mar. 20, 1997, 14 CFR 121 includes 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...

Reporting Thresholds for Property Damage by U.S. Department of Transportation Modal Administrations

Transportation-Related Occupational Fatalities

^a Based on the 1992 Bureau of Labor Statistics, Occupational Injury and Illness Classification Manual.

^b Numbers may not add to totals because transportation categories may include subcategories not shown separately.

^c Includes collisions between vehicles/mobile equipment moving in the same or opposite directions, such as in an intersection; between moving and standing vehicles/mobile equipment at the side of a roadway; or a vehicle striking a stationary object. Also includes noncollisions, e.g., jack-knifed or overturned vehicle/...

Roadway Vehicle-Kilometers Traveled (VKT) and VKT per Lane-Kilometers by Functional Class

^a Includes the 50 States and the District of Columbia.

^bUrban other arterial includes other freeways and expressways, other principal arterial, and minor arterial. Rural other arterial includes other principal arterial and minor arterial prior to 2009, and includes other freeways and expressways, other principal arterial and minor arterial for 2009.

^cCollector is the sum of major and minor collectors. 

U.S. Vehicle-Kilometers

KEY: N = data do not exist; R = revised; U = data are not available.

a All operations other than those operating under 14 CFR 121 and 14 CFR 135. Data for 1996 are estimated using new information on nonrespondents and are not comparable to earlier years. Mileage in source is multiplied by 1.151 to convert to nautical-miles for 1985-1997.

b 1960-2006 data are for Passenger Cars and Other 2-axle, 4-tire vehicles, respectively. Data for 1960-2006 are not comparable to data for 2007-15. 

c U.S. Department of Transportation, Federal Highway Administration (FHWA),...

Estimated U.S. Roadway Lane-Kilometers by Functional System

^a Includes the 50 States and the District of Columbia.

^bUrban other arterial includes 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. 

Kilometers of Public Roads and Streets in the United States by Type of Surface

KEY:  N = data does not exist.

^a 1960-95 data includes the 50 states and the District of Columbia; 1996-2008 data includes the 50 states, District of Columbia, and Puerto Rico; 2011-16 data includes the 50 states and the District of Columbia; 2017-18 data includes the 50 states, Puerto Rico (data may be incomplete), and the District of Columbia.

^b  Paved mileage includes the following categories: low type (an earth, gravel, or stone roadway that has a bituminous surface course less than 1" thick); intermediate type (a mixed...