What must you never do when approaching a railroad crossing?

When approaching a railroad crossing, the most crucial action is to ensure that there is sufficient space on the other side before entering the crossing. This means if there isn't enough room for your vehicle to completely clear the tracks after crossing, you should not proceed, as stopping on the tracks can put you and others in a dangerous situation.

Being in a position where your vehicle is stalled on the tracks can lead to a severe accident if a train approaches. It's essential to assess the distance and traffic conditions to determine whether it is safe to cross. Thus, ensuring there is ample room on the far side of the crossing is paramount for your safety and the safety of others.