1 ptsA,B,C,D,T,AM,A1,A2,B1,C1,D1Official number: 13451
May the devices forcing slow driving beyond this sign not be marked with warning signs?

Description
§ 58 paras. 1 and 2 of the Regulation of the Ministers of Infrastructure and of Internal Affairs and Administration of 31.07.2002 on road signs and signals (Journal of Laws of 2002 No. 170, item 1393, as amended).
Explanation
Correct answer: Yes
The D-40 "Residential zone" sign indicates entry into an area where special traffic rules apply. According to regulations, in such a zone, devices that enforce slow driving, e.g. speed bumps, may not be marked with additional warning signs. The D-40 sign itself is a sufficient warning for the driver, who must be prepared for such obstacles and travel at a speed of up to 20 km/h.