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Home » Learn About BTS and Our Work

About BTS

Statistical Methods and Policies

OMB statistical policy directives
BTS guidelines for data collection, confidentiality, and statistical quality
Seasonal adjustment methods

Updated: Thursday, December 7, 2017

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BUREAU OF TRANSPORTATION STATISTICS

U.S. Department of Transportation

1200 New Jersey Avenue, SE

Washington, DC 20590

800-853-1351

Phone Hours: 8:30-5:00 ET M-F

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