The U.S. Department of Transportation proposed a regulation on July 31, 2026 [1], requiring Mexican freight-train crews to demonstrate English proficiency.

The move aims to reduce the risk of rail accidents by ensuring crews can communicate safety-critical information while operating within the United States. Language barriers at border crossings have been identified as a potential safety hazard for crews and dispatchers.

Under the proposed rules, crews crossing into the U.S. from Mexico must prove they can understand and communicate essential instructions in English. These requirements would apply primarily to rail crossings in Texas and other border states where international freight traffic is highest [2].

The Trump administration said the measure is necessary to maintain safety standards for the national rail network. By mandating a common language for critical communications, the DOT intends to minimize misunderstandings that could lead to derailments or collisions.

Freight rail is a primary artery for trade between the U.S. and Mexico. The new regulations would target the specific personnel responsible for the movement of goods across the border, specifically those involved in safety-critical communications [3].

Officials said the focus is on the ability of crews to process and execute emergency directives and operational signals. The DOT has not yet detailed the specific testing methods that will be used to verify proficiency levels for these crews [2].

Mexican freight-train crews crossing into the United States must demonstrate English proficiency.

This regulation represents a tightening of operational requirements for cross-border logistics. While framed as a safety measure to prevent accidents, it adds a layer of compliance for Mexican rail operators and could potentially create staffing bottlenecks at the border if a significant portion of the workforce fails to meet the new proficiency standards.