American Trucking Associations President Chris Spear urged congressional leaders to intervene in the labor dispute between the railroads and their unions with a Sept. 16 deadline approaching. A work disruption would deeply affect the supply chain as retailers gear up for the holiday shopping season. \u201cIdling all 7,000 long-distance daily freight trains in the U.S. would require more than 460,000 additional longhaul trucks every day, which is not possible based on equipment availability and an existing shortage of 80,000 drivers,\u201d Spear said.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices