A driver of a bus (public transport vehicle) must not:

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Smoke in the vehicle. This does not apply if the driver's area is separated from the passenger area by a safety partition.
Smoke in the vehicle. This does not apply if there are no passengers in the bus.

Legal Basis: You can find this in § 7, paragraph 2 of Act No.

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Legal basis: Zákon č. 361/2000 Sb., § 7 odst. 1 písm. b)

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