Does this sign permit a vehicle that runs on natural gas to enter the green transport zone?

Does this sign permit a vehicle that runs on natural gas to enter the green transport zone?

Description

Regulation of the Minister of Infrastructure and the Minister of the Interior and Administration of 31 July 2002 on road signs and signals (Journal of Laws 2002, No. 170, item 1393, as amended) § 60d and the Act of 11 January 2018 on electromobility and alternative fuels art. 39.1 pt. 3
Explanation

Correct answer: Yes

Yes. D-54 marks entry to a clean transport zone. Vehicles powered by natural gas are exempt from the entry ban under Article 39(1)(3) of the Polish Electromobility and Alternative Fuels Act. This means natural gas, such as CNG; an LPG conversion alone does not qualify.