Final answer:
The incorrect statement is that it is safe to drive around lowered train crossing gates, which is both illegal and dangerous. Vehicles must always yield to trains, and it is riskier to collide with a train than a car. Additionally, always be cautious of the Doppler effect and atmospheric pressure near moving trains.
Step-by-step explanation:
The incorrect statement about trains is (c) It is OK to drive around lowered crossing gates if you are running late and you are ABSOLUTELY CERTAIN you can do it safely. This is a dangerous practice and is illegal in many jurisdictions. Trains always have the right of way because they cannot stop quickly, and vehicles must yield to them at all times. Furthermore, it is a fact that a driver is significantly more likely to die in a collision with a train than with another motor vehicle.
Additionally, standing too close to railroad tracks can be hazardous when a train passes by rapidly due to changes in atmospheric pressure which could push you toward the train. This is a phenomenon related to physics and the displacement of air by the train's movement.
Lastly, if you are driving alongside a train and hear its horn at a pitch that is lower than the actual frequency, it indicates a Doppler effect. To match the speed of the train, you would need to adjust your speed. If the pitch is lower, it might mean the train is moving away from you or you are moving away from it. To match its speed, you would need to increase or decrease your speed accordingly.