About Transportation Services Index The Transportation Services Index (TSI), created by the U.S. Department of Transportation (DOT), Bureau of Transportation Statistics (BTS), measures the movement of freight and passengers. The index, which is seasonally adjusted, combines available data on freight traffic, as well as passenger travel, that have been weighted to yield a monthly measure of transportation services output. For charts and discussion on the relationship of the TSI to the economy, see our Transportation as an Economic Indicator: Transportation Services Index page (https://data.bts.gov/stories/s/TET-indicator-1/9czv-tjte) For release schedule see: https://www.bts.gov/newsroom/transportation-services-index-release-schedule About seasonally-adjusted data Statisticians use the process of seasonal-adjustment to uncover trends in data. Monthly data, for instance, are influenced by the number of days and the number of weekends in a month as well as by the timing of holidays and seasonal activity. These influences make it difficult to see underlying changes in the data. Statisticians use seasonal adjustment to control for these influences. Controlling of seasonal influences allows measurement of real monthly changes; short and long term patterns of growth or decline; and turning points. Data for one month can be compared to data for any other month in the series and the data series can be ranked to find high and low points. Any observed differences are “real” differences; that is, they are differences brought about by changes in the data and not brought about by a change in the number of days or weekends in the month, the occurrence or non-occurrence of a holiday, or seasonal activity.

Visualizations featuring BTS' Transportation Services Index (TSI). The TSI measures the monthly movement of freight and passengers .

Personal spending on transportation services includes spending on motor vehicle services, such as maintenance and repair, and public transportation, including rail transportation, intercity buses, taxicabs and ride sharing services, intracity mass transit, air transportation, and water transportation. The Bureau of Economic Analysis estimates personal consumption expenditures, the primary measure of consumer spending on goods and services in the U.S. economy, for each quarter and releases new statistics every month. Quarterly PCE data are seasonally adjusted at annual rates to remove the effects of normal seasonal variation.

서울시 교통 관련 주요 지표를 월 단위로 종합 정리한 통계 보고서입니다. 통행속도, 교통량, 버스·지하철 이용건수 등 다양한 교통 정보를 월별로 비교할 수 있어 단기 변화와 계절별 특성을 분석하는 데 매우 유용합니다. 정책 영향 분석, 수요예측, 도시계획 등 다양한 목적에 활용 가능한 핵심 월간 지표 자료입니다.

Use of transportation services by industry

Contribution of transportation services to the economy and the Transportation Satellite Accounts

Contribution of industries to the economy and their use of transportation services to produce goods and services, including number of person employed in transportation occupations.

运输、仓库及速递服务业的业务表现及营运特色的主要统计數字〔统计报告〕