If you drive a truck with a gross vehicle weight of over 3.5 t, what's the maximum speed at which you can drive on the road once you go past this sign?

In the photo, you are driving on a dual carriageway with two lanes in each direction, and on the right there is sign D-8 "end of expressway". When driving a lorry with a maximum permissible mass of over 3.5 t, beyond this sign you may drive at no more than 80 km/h - answer C.

The Road Traffic Act states that the speed limit for a vehicle other than a passenger car, a motorcycle and a lorry up to 3.5 t outside a built-up area is 80 km/h on a motorway, an expressway or a dual carriageway with at least two lanes for each direction of traffic, and 70 km/h on other roads. The Regulation on road signs and signals states that sign D-8 marks the end of an expressway. Beyond the sign, the road is no longer an expressway, but it still has two roadways and two lanes in each direction - and that is enough for a lorry over 3.5 t to drive at 80 km/h. The answer 70 km/h would apply on an ordinary single-carriageway road, and 60 km/h is a trick answer. For passenger cars, the limit here drops from 120 to 100 km/h, so the difference in speed between them and you gets smaller.

Legal basis: Art. 20 para. 3 point 2 letter a and b of the Road Traffic Act (Prawo o ruchu drogowym); § 48 para. 1 of the Regulation on road signs and signals