(NewsNation) — Transportation Secretary Sean Duffy is expected to take action against three states accused of failing to enforce English language proficiency standards for commercial truck drivers.

The move comes in the wake of a deadly crash in Florida, in which a truck driver is accused of making an illegal U-turn, killing three people. Authorities said 28-year-old Harjinder Singh, a native of India, answered two out of 12 questions correctly on an English test and later failed additional language and road sign exams.

Federal guidelines require truck drivers to pass roadside English tests and demonstrate the ability to read and speak English, though enforcement is left to individual states.

Duffy has alleged that at least three states issued commercial licenses without meeting those s

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