REC TFREE REC Train Operations & Handling — Questions and Answers

Question 1: When a locomotive engineer encounters a broken rail, what is the FIRST action to take?

Increase speed to cross quickly
Stop the train and protect the track (Correct answer)
Notify the next station and continue
Slow to restricted speed and proceed

Correct answer: Stop the train and protect the track

Upon discovering a broken rail, the engineer must stop immediately and protect the track by flagging to prevent other trains from entering the affected section.

Question 2: What does 'dynamic braking' primarily use to slow a train?

Air pressure applied to wheel brake shoes
The locomotive's traction motors acting as generators (Correct answer)
Hydraulic retarders on the axles
Magnetic eddy current braking on the rails

Correct answer: The locomotive's traction motors acting as generators

Dynamic braking converts traction motors into generators, creating electrical resistance that produces a retarding force to slow the train.

Question 3: A train is operating in MAS (Maximum Authorized Speed) territory. Which factor does NOT affect the MAS?

Track class designation
Curvature of the track
The engineer's years of experience (Correct answer)
Equipment speed rating

Correct answer: The engineer's years of experience

MAS is determined by track class, curvature, equipment ratings, and operating rules — not by the individual engineer's experience level.

Question 4: Under FRA regulations, what is the minimum required brake pipe reduction to initiate a service brake application?

2 psi
6 psi (Correct answer)
14 psi
26 psi

Correct answer: 6 psi

FRA regulations and AAR standards require a minimum 6 psi brake pipe reduction to ensure a proper service brake application propagates through the train.

Question 5: What is 'bunching' in train handling terminology?

Coupling cars at high speed
Compressing slack so cars push against each other (Correct answer)
Separating cars during a bad order inspection
Applying brakes on lead units only

Correct answer: Compressing slack so cars push against each other

Bunching refers to compressing the slack in a train so that cars are pushing against each other, which can cause rough handling or derailments if done abruptly.

Question 6: When must an engineer acknowledge a cab signal change to a more restrictive indication?

Within 30 seconds
Before the next signal mast
Immediately upon display (Correct answer)
At the next mandatory stop

Correct answer: Immediately upon display

Cab signal rules require the engineer to acknowledge a more restrictive indication immediately upon its display to confirm awareness.

Question 7: What condition is indicated when a locomotive's wheel slip light activates during acceleration?

The locomotive is overloaded and should be cut out
The drive wheels are losing traction and spinning (Correct answer)
Brake pressure is too high on the power trucks
The sanding system has failed

Correct answer: The drive wheels are losing traction and spinning

Wheel slip occurs when drive wheels spin faster than the rail speed, indicating loss of adhesion; the system reduces throttle or applies sand automatically.

Question 8: During a descending grade, an engineer notices brake cylinder pressure is not releasing after a brake release command. What is the most likely cause?

Excessive train speed
A stuck or frozen retaining valve (Correct answer)
The hand brake being applied
Overcharge of the brake pipe

Correct answer: A stuck or frozen retaining valve

A stuck or frozen retaining valve can trap air in the brake cylinder, preventing full release even after a brake pipe pressure restoration.

Question 9: What is the purpose of a 'grade timing' technique during train handling?

Calculating fuel consumption on downgrades
Timing brake applications to control speed without overheating brakes (Correct answer)
Measuring how long to hold at a signal
Scheduling departure times based on track grade

Correct answer: Timing brake applications to control speed without overheating brakes

Grade timing involves applying and releasing brakes in a controlled cycle to manage speed on long descents while preventing brake shoe overheating.

Question 10: A 'stretch' move is used in train handling to:

Extend couplers for car switching
Remove slack from the train in a controlled manner (Correct answer)
Test coupler strength before a heavy haul
Increase train speed on an upgrade

Correct answer: Remove slack from the train in a controlled manner

A stretch move gently removes slack from couplers by applying a light throttle or braking so the train is in tension, reducing in-train forces.

Question 11: What FRA track class permits a maximum freight train speed of 60 mph?

Class 3
Class 4 (Correct answer)
Class 5
Class 6

Correct answer: Class 4

FRA Class 4 track allows freight train speeds up to 60 mph and passenger speeds up to 80 mph under standard conditions.

Question 12: An engineer receives a 'slow order' for 25 mph over a bridge. At what point is the train compliant with the slow order?

When the lead locomotive reaches 25 mph
When the entire train is at or below 25 mph (Correct answer)
When the lead locomotive clears the bridge
When the dispatcher confirms the reduction

Correct answer: When the entire train is at or below 25 mph

The train is compliant when every car and locomotive in the consist is operating at or below the authorized speed limit for that section.

Question 13: What is the primary reason for performing a 'brake pipe integrity test' before departure?

To verify the locomotive brake cylinder pressure
To confirm all cars are connected and brake pipe is continuous (Correct answer)
To test the engineer's braking response time
To measure track resistance on the departure route

Correct answer: To confirm all cars are connected and brake pipe is continuous

The brake pipe integrity test confirms that the air brake pipe is unobstructed and connected through all cars in the train, ensuring brakes will respond throughout.

Question 14: When approaching a STOP signal at a controlled point, an engineer who cannot stop in time should:

Increase speed to clear the interlocking quickly
Apply emergency brakes and report the violation (Correct answer)
Notify the conductor and continue at restricted speed
Wait for the signal to clear before acting

Correct answer: Apply emergency brakes and report the violation

If stopping before a STOP signal is not possible, the engineer must apply emergency brakes, make every effort to stop, and immediately report the circumstances.

Question 15: What is the function of an 'alerter' (deadman) device on a locomotive?

Warns crews of grade crossings
Automatically stops the train if the engineer becomes incapacitated (Correct answer)
Activates the horn at designated locations
Controls automatic speed regulation

Correct answer: Automatically stops the train if the engineer becomes incapacitated

The alerter monitors engineer activity and initiates a brake application if no control input is detected within a set time, preventing runaway trains from incapacitated crews.

Question 16: When two locomotive units are coupled together in multiple-unit (MU) operation, what controls their combined throttle?

Each unit has its own independent throttle lever
The lead unit's throttle controls all units simultaneously (Correct answer)
A remote operator on the second unit
The trainmaster from the dispatcher's office

Correct answer: The lead unit's throttle controls all units simultaneously

In MU operation, the lead locomotive's throttle and brake controls are transmitted electrically to all trailing units, allowing one engineer to control the entire consist.

Question 17: A 'run-through' power consist means:

A locomotive that exceeds its rated horsepower
Foreign-road power operating over another railroad's tracks (Correct answer)
A consist that bypasses scheduled maintenance
A locomotive operating without a cab crew

Correct answer: Foreign-road power operating over another railroad's tracks

Run-through power refers to locomotives owned by one railroad that continue operating over the tracks of a different railroad without being changed out.

Question 18: What does a 'joint' bar crack indicate about track condition?

The rail needs lubrication
A potential rail failure requiring speed restriction or removal from service (Correct answer)
Normal thermal expansion is occurring
The track needs realignment only

Correct answer: A potential rail failure requiring speed restriction or removal from service

Cracked joint bars (angle bars) can lead to catastrophic rail joint failure and require speed restriction or immediate removal from service to prevent derailment.

Question 19: Under FRA 49 CFR Part 228, the maximum on-duty time for a freight train crew on a single tour of duty is:

10 hours
12 hours (Correct answer)
14 hours
16 hours

Correct answer: 12 hours

FRA Hours of Service regulations (49 CFR Part 228) limit freight train operating crews to 12 consecutive hours on duty before mandatory rest.

Question 20: What is 'positive train separation' as it relates to train operations?

A rule requiring 1-mile spacing between trains
A technology-based system that automatically prevents train collisions and overspeed (Correct answer)
A policy for separating passenger and freight trains on shared track
Manual block operations by a dispatcher

Correct answer: A technology-based system that automatically prevents train collisions and overspeed

Positive Train Control (PTC) is a technology system that uses GPS, communications, and onboard computers to automatically enforce speed limits and prevent collisions.

Question 21: When a train experiences a 'dynamiter' (emergency application from a car in the train), the engineer should:

Increase throttle to overcome the braking force
Make a full service brake application and then investigate (Correct answer)
Release brakes immediately to prevent wheel flat spots
Continue at reduced speed and notify the dispatcher

Correct answer: Make a full service brake application and then investigate

When a car triggers an unintended emergency application (dynamiter), the engineer must make a full service application to control the stop and then identify and remediate the faulty car.

REC TFREE REC Train Operations & Handling

When a locomotive engineer encounters a broken rail, what is the FIRST action to take?

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