A safe driving speed is defined as one:
Show the correct answer
Correct answer
A. that ensures optimal control of the vehicle.
Explanation
The question is about the definition of a safe speed. A safe speed is a speed that ensures control of the vehicle - answer A.
The Road Traffic Act states that the driver of a vehicle is obliged to drive at a speed that ensures control of the vehicle, taking into account the conditions in which traffic takes place, in particular the terrain, the condition and visibility of the road, the condition and load of the vehicle, the weather conditions and the traffic volume. This is exactly a safe speed - and as you can see, it is not any specific number, but a speed chosen for the situation. Answer B is wrong, because the speed limit from a sign or from the Act is only an upper limit: in rain, in fog, on an icy road or in heavy traffic a safe speed is lower than the permitted one, and driving "at the limit" may be a petty offence. Answer C is wrong, because the navigation system shows the limit from the map and does not see a wet road surface or a child by the road. A practical measure: you drive so that you can stop within the section of road that you can see ahead of you.
Legal basis: Art. 19 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)