Which of the following conditions must be met to activate the cruise control?

In the illustration, you can see the cruise control symbol - a speedometer with an arrow pointing to the set speed. The condition for switching on cruise control is that the vehicle has reached the minimum speed set by the manufacturer - answer A.

Cruise control keeps the set speed by controlling the amount of fuel, and by design it works only above a certain threshold, usually about 30 km/h, depending on the manufacturer - below it the system cannot be switched on, because at low speeds the control would be jerky and dangerous. Pressing the clutch (answer B) works the opposite way: just like pressing the brake, it switches cruise control off immediately. The speed limiter (answer C) is a separate function which is not a condition for cruise control to work. The Road Traffic Act requires you to drive at a speed that ensures control of the vehicle, so you use cruise control only on a dry, clear road with light traffic; in rain, on a slippery surface, in a traffic jam and on a winding mountain road you switch it off, because it delays your reaction and will not slow down by itself before a bend.

Legal basis: Art. 19 para. 1 and Art. 66 para. 1 point 1 of the Road Traffic Act (Prawo o ruchu drogowym)