Drivers can use drugs while driving only if:

They are legal drugs.
They have been prescribed by a doctor.
They don't contain any controlled substances.
None of the above.
Explanation

The law prohibits driving under the influence of any controlled substance, not just illegal drugs. All medications, whether prescription or over-the-counter, can be potentially dangerous and impair your ability to drive. Even common over-the-counter remedies, such as allergy or cold medications, may cause drowsiness and negatively impact your driving skills.

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