When you are about to pass a level crossing, the most important factor to consider when adapting your speed is how good your visibility is in both directions.
Regardless of what type of safety device a level crossing is equipped with, you should never rely on it blindly – you must always check for approaching trains before passing the level crossing. Always look both left and right when checking.
Once you have made sure that no train is approaching, you should change down to a low gear and quickly pass the level crossing. By changing down, the risk of stalling is reduced while the car's acceleration power increases.