Drivers can use drugs while driving only if:

They don't contain any controlled substances.
They are legal drugs.
They have been prescribed by a doctor.
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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