The public has until May 21 to comment on three Mexican carriers applying for authority through the cross-border trucking pilot program.
Union countered to halt cross-border trucking program with Mexico, which was preceded by Mexico filing a brief.
FMCSA has granted operating authority to a second Mexican carrier.
Jay Rockefeller said he was concerned about the first two Mexican carriers to pass pre-authorization safety audits.
The pilot program officially began Oct. 14 after officials granted provisional operating authority to the first Mexican carrier.
The Federal Motor Carrier Safety Administration granted authority to one carrier and Mexico said it will remove tariffs against U.S. products.
FMCSA has named first Mexican carrier expected to receive provisional operating authority, but will extend review of a second applicant.
Agency reported concerns it found during visits at Mexican testing centers for the equivalent of a U.S. commercial driver’s license.
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