Post-train passage at a railroad crossing requires watching for both vehicles required to stop and for the possibility of additional trains.
After a train passes at a railroad crossing, it is important to remain vigilant for both safety and legal reasons. You must watch for vehicles that must stop at railroad crossings, such as school buses and trucks carrying hazardous materials, as they have specific regulations to follow at railroad crossings. Additionally, always watch for multiple trains, as there could be more than one train approaching, even from different tracks or directions. Therefore, the correct answer is to do both: watch for vehicles that must stop and watch for multiple trains.