You know that what you eat affects your sleep, but did you know that the reverse is also true? Studies now show that people who are sleep deprived tend to eat more fat-rich foods, simple carbohydrates, and fewer vegetables, possibly because sleep loss alters chemical signals connected to metabolism and hunger.
Figure 6. Figure 6 is a bar graph showing the number of main-track train derailments and the number of main-track train collisions per year from 2001 to 2010. In 2001 there were 7 main-track train collisions and 132 main-track train derailments.
Tuesdayâs night Amtrak train derailment in Philadelphia, which appears to have been caused by the trainâs excessive speed around a tight curve, has left many wondering who is responsible for what on American trains. A modern-day train typically has two to five crew members responsible for operating it. The two required no matter the type of train are an engineer and a conductor; the former is responsible for operating the locomotive, while the latter plays a supervisory role over the entire operation. The two work in unison. An engineer sits in what the layman may call the driverâs seat.