When approaching a railroad crossing without a signal, what should a driver do?

Answer: B — Look both ways and proceed with caution

When a driver approaches a railroad crossing without a signal, the appropriate action is to look both ways and proceed with caution. This is crucial because trains can come at any time, and their speed can make them appear much closer than they actually are. By looking both ways, a driver is ensuring that the tracks are clear of any oncoming trains before proceeding. It is also important to remember that trains can be extremely dangerous due to their large size and momentum; even if a train is not immediately visible, it could be approaching unexpectedly. Rushing through the crossing or ignoring the crossing altogether increases the risk of a collision. Therefore, vigilance and caution are essential practices when navigating rail crossings, particularly those without signals indicating train activity.