Bonus question. Math for journalists. The Web won't help you here.
After the Amtrak train "The City of New Orleans" hit a truck at a crossing near Bourbonnais, Ill., the National Transportation Safety Board measured off the distances at the crossing. The investigators told reporters that the truck driver could have seen the train approaching in the darkness at no more than 644 feet from the crossing. NTSB also said that the train was traveling at 79 miles per hour, the speed limit on that track. So, how many seconds before impact could the driver have seen the train? And if the crossing gates are timed to come down 27 seconds before the train reaches the crossing, what's the story?
Hint for the bonus question
Answer for the bonus question