Final answer:
After a train clears a crossing that has flashing signals, drivers may proceed after checking for a second train on another track.
Step-by-step explanation:
After a train clears a crossing that has flashing signals, drivers may proceed after checking for a second train on another track. This statement is True. It is important for drivers to not only obey the flashing signals but also make sure there are no other trains approaching from another track. This is done to ensure safety and prevent accidents at the crossing.