Trump to require truck drivers to speak English

CODE OF FEDERAL REGULATIONS
49 CFR 391.11(b)(2) state that a CDL driver must be able to:
Speak and read English and understand highway traffic signs and signals in English.

https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-391/subpart-B/section-391.11

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Disqualifications to operate a Commercial Vehicle

https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-391/subpart-B/section-391.15