美国货运运输服务指数8月环比再跌0.4% 连跌两个月至2021年9月以来最低
美国交通部运输统计局（Bureau of Transportation Statistics，BTS）10月14日发布的运输服务指数（TSI）显示，衡量营业性运输行业货运量的货运运输服务指数2026年8月环比下跌0.4%，为连续第二个月下跌；与2025年8月相比，该指数下跌3.0%。经季节调整后，8月货运指数为134.4，7月指数经修订后为134.9（上月发布值为135.7）。BTS表示，货运指数现已降至2021年9月以来的最低水平。
BTS的分析指出，8月货运指数下跌源于铁路货运车皮量、铁路多式联运、卡车运输和水运量的下降，而航空货运和管道运输量有所上升。货运运输服务指数由营业性卡车运输、铁路货运服务（含铁路多式联运）、内河航运、管道运输和航空货运等分项构成，衡量营业性运输行业承运的货运量变化。
客运方面，客运运输服务指数8月环比上涨0.2%，此前曾连续两个月下跌；与2025年8月相比下跌0.2%。7月客运指数经修订后为127.6（上月发布值为129.3）。货运与客运综合指数8月环比下跌0.2%，同比下跌2.0%。BTS说明，月度数据因采用同步季节调整法会随新数据加入而修订，项目网页上的数据为最新版本。
资料来源：美国交通部运输统计局（BTS）2026年10月14日发布（编号 BTS 26-76）。
U.S. Freight Transportation Services Index Falls 0.4% in August, Second Straight Monthly Decline to Lowest Since September 2021
The Freight Transportation Services Index (TSI) fell 0.4% in August from July, falling for the second consecutive month, according to data released on October 14 by the U.S. Department of Transportation's Bureau of Transportation Statistics (BTS). From August 2025 to August 2026, the index fell 3.0%. On a seasonally adjusted basis, the freight index stood at 134.4 in August, after the July index was revised to 134.9 from 135.7 in the previous release. BTS said the freight index is now at its lowest level since September 2021.
According to the BTS analysis, the August freight decrease reflected declines in rail carloads, rail intermodal traffic, trucking, and waterborne volumes, while air freight and pipeline volumes increased. The Freight TSI measures the amount of freight carried by the for-hire transportation industry and consists of for-hire trucking, railroad freight services including rail-based intermodal shipments, inland waterways transportation, pipeline transportation, and air freight.
The Passenger TSI rose 0.2% in August from July, rising after two months of decline, and fell 0.2% from August 2025. The July passenger index was revised to 127.6 from 129.3. The combined freight and passenger index fell 0.2% in August from July and fell 2.0% from August 2025. BTS noted that monthly data are revised under concurrent seasonal analysis as new data are added, and that the data on the program page of its website are the most up to date.
Source: U.S. Bureau of Transportation Statistics release BTS 26-76, October 14, 2026.
图片来源：图：芝加哥地区一列载有集装箱的BNSF多式联运货运列车（资料图）。摄影：vxla，CC BY 2.0，来源：Wikimedia Commons
