REC Study Guide 2026
Everything you need to pass the REC exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 REC Exam Format at a Glance
📚 REC Topics to Study (31)
✍️ Sample REC Questions & Answers
1. What is the function of a 'block' in a railroad signal system?
A block is a defined section of track between consecutive signals that allows only one train at a time, providing spacing between trains.
2. What is the purpose of the locomotive's Sanders system during an inspection?
The Sanders system deposits sand between the wheels and rail to increase adhesion during wheel slip or slippery rail conditions.
3. Which lighting component is required to be operational on a locomotive during nighttime operations per FRA rules?
FRA requires the front headlight, number lights, and sufficient cab lighting to be operational for safe nighttime locomotive operation.
4. Under FRA regulations, what is the maximum blood alcohol concentration (BAC) permitted for a railroad engineer on duty?
FRA regulations (49 CFR Part 219) set the maximum BAC for on-duty railroad employees at 0.04%, which is half the legal driving limit in most states.
5. What must be done before moving a train?
Before moving a train, a thorough brake test must be performed to ensure that all braking systems are fully functional and capable of safely stopping the train. This critical safety procedure verifies that the air brakes apply and release correctly on all cars, preventing uncontrolled movements or accidents.
6. What is 'tumble-down' logic in a signal system?
Tumble-down logic causes a restrictive condition to automatically propagate backward through preceding signals, warning approaching trains of a stop indication ahead.