What should drivers do when approaching a railroad crossing?

When approaching a railroad crossing, it is crucial for drivers to look both ways and listen for trains. This practice ensures that they are aware of any oncoming trains before proceeding. By checking in both directions, drivers can assess the safety of crossing the tracks, as trains can appear unexpectedly from either side. Additionally, listening for the sound of a train horn or the rumble of an approaching train can provide critical warning signs that a vehicle should wait before attempting to cross. This approach emphasizes the importance of vigilance and caution in such situations to prevent accidents.

The other choices do not prioritize safety or proper decision-making at railroad crossings. Speeding up to cross quickly poses a significant danger, as it increases the likelihood of misjudgment regarding the train's arrival. Turning off the vehicle does not aid in ensuring a safe crossing and could lead to other safety concerns. Changing lanes immediately is unnecessary and could lead to confusion or dangerous maneuvers if other vehicles are present. Thus, looking both ways and listening for trains is the safest and most responsible action to take.