United States Department of Transportation
Ask-A-Librarian
A-Z Index
NTL
Topics and Geography
Topics
Airlines and Airports
Energy and Environment
Freight Transportation
Infrastructure
Passenger Travel
Safety
System Performance
Transportation and the Economy
Geography
Geospatial Portal
Map Gallery
International
National
By State
Modes
Aviation
Highway
Rail
Maritime and Inland Waterways
Pipelines
Transit
Bicycles and Pedestrian
Statistical Products and Data
Statistical Products
Information Gallery
A-Z index of BTS Publications
Airline Information for Download
Border Crossing Data
Commodity Flow Survey
Confidential Close Calls Reporting
Freight Analysis Framework
Freight Facts and Figures
Airline Information
Intermodal Transportation Database
National Census of Ferry Operators
National Transportation Statistics
National Transportation Atlas Database
National Transportation Data Archives
National Transportation Library
Port Performance
State Transportation Statistics
TransBorder Freight Data
Transportation Services Index
Transportation Economic Accounts
Tools and Apps
GIS Applications
Intermodal Transportation Database
National Census of Ferry Operators
National Transportation Statistics
National Transportation Atlas Database
National Transportation Data Archives
Passenger Travel Facts and Figures
Pocket Guide App
Build Your Own Tables and Graphs
Deficient Bridges App
BTS Publications
Port Performance Freight Statistics Program
State Transportation Statistics
Tank Car Survey
TransBorder Freight Data
Transportation Economic Accounts
Transportation Economic Trends
Transportation Services Index
Transportation Statistics Annual Reports
A-Z index of BTS Publications
Airline Information for Download (1)
Airline Information for Download
Bookstore
Current BTS Publications
Freight Facts and Figures (1)
Freight Facts and Figures
Passenger Travel Facts and Figures
About BTS
Statistical Methods and Policies
OMB Statistical Policy Directives
BTS Guidelines for Data Collection, Confidentiality, and Statistical Quality
Seasonal Adjustment Methods
Federal Register Notices
Rulemaking
Behind The Numbers: BTS Webinar Series
About BTS
Overview
Staff Directory
Advisory Council on Transportation Statistics
Port Performance Working Group
Legislative Mandates
History of BTS
Jobs and Internships
National Transportation Library
News/Statistical Releases
Calendar
Release Schedule
Special Topics
OST-R
>
BTS
Search this site:
Go
Advanced Search
Resources
Database Directory
Glossary
Upcoming Releases
Data Release History
Data Finder
By Mode
Aviation
Maritime
Highway
Transit
Rail
Pipeline
Bike/Pedestrian
Other
By Subject
Safety
Freight Transport
Passenger Travel
Infrastructure
Economic/Financial
Social/Demographic
Energy
Environment
National Security
Glossary : Z
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Print
All Rows Shown
Terms
Definitions
No record found.
All Rows Shown
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Print