The practice exams are based on the official study guides, and the applicable carrier rule books. They are best described as digital versions of the Amtrak study guides. Although very few, be aware there may be aspects in the rule books that are not represented in the study guides, or the practice material here. Best practice is to be thoroughly familiar with the applicable rule book you are testing on before you attempt the practice exams. <br /><br />The signals, and also the answer options, are shuffled each time you start a practice session. There is only one correct answer. Practice as much as you want, there is no personally identifiable record of your session attempts or results.<br /><br />The practice material on this forum has not been reviewed or endorsed by Amtrak.