You want to cross a level crossing with the barriers open. What is correct?

You answered correctly. When approaching a level crossing, even if the barriers are open, you must drive at a moderate speed so you can stop quickly if needed. It's also important to expect possible bumps or uneven surfaces at the crossing itself. However, you are not required to cross only at walking speed unless specifically instructed by signs. These precautions help you notice and react to unexpected hazards at railway crossings. Always approach with care and be prepared to stop if necessary.