Do you always have to stop before you enter a railway crossing marked with this sign?

The warning sign A-9 'level crossing with barriers' warns of an approaching railway crossing equipped with barriers. This sign alone does not impose an obligation to stop. According to Art. 28 of the Road Traffic Act, the driver is obliged to exercise special caution but stops only when the barriers are down (or in the process of being lowered) or when the signal shows red. An absolute obligation to stop would only be introduced by the B-20 'STOP' sign.