Measure would give the federal transportation department authority to assess driver safety fitness.
FMCSA has granted operating authority to one of three Mexico-based carriers that cleared Pre-Authority Screening Audits.
North American Freight Index climbed 39 percent last month compared with October 2010.
A new law affecting medical certificates for CDL holders will begin implementation Jan. 30 and be phased in through 2014.
FMCSA on Oct. 28 announced it would not be able to publish the rule by that day's deadline. The deadline was extended to Nov. 28.
Mexico had approved three U.S. carriers to deliver beyond its border by Oct. 21, when the first Mexican carrier crossed into Laredo, Texas.
The Federal Motor Carrier Safety Administration granted authority to one carrier and Mexico said it will remove tariffs against U.S. products.
A federal advisory group is accepting feedback before making recommendations for any future rulemaking.
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