16. A train jumps its tracks at a railroad crossing and crashes into a car. The driver of the car is severely injured and sues the railroad company in negligence. At trial, the sole issues contested were:

a. whether the train tracks were negligently maintained;

b. whether the engineer was adequately trained;

c. whether the train was travelling at the recommended speed;

d. whether the train was negligently maintained; and

e. whether the crossing signals were in proper working order.