A person who is NOT medically fit to drive motor vehicles is someone:

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Who, according to a medical fitness report, has behavioral disorders caused by addiction to alcohol or other psychoactive substances.

Who is a person with a severe disability, severe mobility impairment, or hearing impairment.
Who is currently on sick leave.

Legal Basis: Alcohol or drug addiction is a condition that disqualifies a person from being medically fit to drive.

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Legal basis: Vyhláška č. 277/2004 Sb. (Zdravotní způsobilost)

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