Nine thousand drivers a year would be parked at the Mexican border under a rule that mostly writes down what inspectors are already doing
Nine thousand drivers.
That is the number the Federal Motor Carrier Safety Administration expects to be placed out of service each year inside the commercial zones along the Mexican border, if a proposed rule filed on Friday morning is adopted. The proposal would write into the Federal Motor Carrier Safety Regulations something that has been true in practice since the summer of 2025, which is that a driver who cannot satisfy the English language proficiency requirement is not merely cited but taken off the road. It would also narrow the one exception to that, and the narrowing is where the nine thousand come from.
What already happened
The requirement is old. A Motor Carrier Safety Regulation adopted on 23 December 1936 took effect on 1 July 1937, and the qualification standard has been in the rules in some form ever since. Enforcement is what moved.
In April 2015 the Commercial Vehicle Safety Alliance, the body that writes the North American Standard Out-of-Service Criteria, removed the provision from those criteria. A 2016 agency policy memorandum then told federal inspectors to cite the violation but not to park the driver. That regime lasted nine years. On 1 May 2025 the alliance voted to put the provision back, effective 25 June 2025, and FMCSA issued a superseding policy memorandum on 20 May.
The numbers on either side of that date are not close. Between January 2025 and 24 June 2025, inspectors issued 7,812 English language proficiency violations, and 33 of them resulted in an out-of-service order. Between 25 June 2025 and 19 March 2026 they issued 60,399, and 19,045 resulted in an out-of-service order.
The exception, and the part being cut
Every one of those 19,045 orders was written outside a border commercial zone. Inside the zones, violations produced none, because the May 2025 memorandum told inspectors to cite drivers there and stop.
How many is a question the document answers three different ways. The sentence recording the split puts 44,354 violations inside the zones, which does not reconcile with the two figures in the sentence before it: 60,399 total less 19,045 outside leaves 41,354. The analysis that follows then works from a third number, 41,563. That last one is the load-bearing figure, and the arithmetic confirms it rather than the prose: the annual extrapolation of 56,575 is 41,563 scaled up from the 268 days the sample covers.
A second memorandum, issued on 16 April 2026, changed that, and the proposed rule would codify it. Inside a zone the inspector now has to establish the scope of the driver's current trip before deciding. A trip that would take the driver outside the zones means an out-of-service order. A trip that stays inside means a citation only, and the document says that holds even where the cargo itself is ultimately bound for somewhere else by way of a different driver.
Where nine thousand comes from
The agency does not have this figure. It says so.
Inspection records from the period do not capture whether a driver had left or intended to leave a zone, so FMCSA used the origin and destination of the cargo as a proxy across all 41,563 violations issued inside the zones. On that basis 83.5 percent would have drawn a citation alone, 16 percent would also have drawn an out-of-service order, and about 0.5 percent could not be classified for want of origin or destination data. Extrapolated across a year, that is roughly 56,575 violations inside the zones and roughly 9,052 out-of-service orders, which the analysis rounds to 9,000. A second method, sorting by whether the carrier held operating authority limited to the zones, produced 15 percent.
The cost follows from the same rounding. FMCSA takes a downtime range of $448 to $760 per vehicle per day, attributed to figures from FleetNet America cited by two industry sources, and says it relies on the higher end of that range and rounds to $800 to ensure all costs are accounted for. It then assumes two days to find a replacement driver and get the freight moving. Nine thousand times $800 times two is $14.4 million a year.
The document is candid about the soft edges in that. It notes that it is unclear whether the published downtime range includes the cost of sourcing the replacement driver at all, that the cargo's destination on a waybill may differ from the driver's on a dispatch order, and that the whole estimate is indirect. It asks for comment on each.
Status
This is a notice of proposed rulemaking, not a rule, and the enforcement it describes is already happening under criteria the alliance revised on 19 April. Comments run 60 days from publication and go to docket FMCSA-2026-0826.
