REC Signal Systems & Communication 2

Question 1

What does a flashing yellow cab signal indication require the engineer to do?

Accepted Answer

Proceed at medium speed prepared to stop at the next signal

Answer

Proceed at maximum authorized speed

Answer

Prepare to pass the next signal at restricted speed

Answer

Stop immediately

Question 2

Which FRA regulation governs the installation and maintenance of signal systems on main tracks?

Accepted Answer

49 CFR Part 236

Answer

49 CFR Part 218

Answer

49 CFR Part 235

Answer

49 CFR Part 240

Question 3

A train receives a 'Stop and Proceed' signal. What is the maximum speed after passing the signal?

Accepted Answer

15 mph

Answer

10 mph

Answer

20 mph

Answer

25 mph

Question 4

What is the purpose of a track circuit in a signal system?

Accepted Answer

To detect the presence of a train in a block

Answer

To power wayside signals electrically

Answer

To communicate with the dispatcher

Answer

To control switch machine operation

Question 5

When an engineer observes that a wayside signal is dark (no indication), how must they treat it?

Accepted Answer

Treat it as the most restrictive indication

Answer

Proceed at normal speed and report the outage

Answer

Treat it as a clear signal since no stop indication is displayed

Answer

Stop and contact the conductor

Question 6

What does ATS (Automatic Train Stop) do when a train passes a stop signal?

Accepted Answer

Automatically applies the brakes if the engineer does not acknowledge

Answer

Sounds an audible alarm only

Answer

Immediately applies emergency brakes without warning

Answer

Reduces speed to 15 mph automatically

Question 7

A 'Grade Signal' on steep descending grades typically indicates what to the engineer?

Accepted Answer

Observe the posted grade speed restriction

Answer

Increase throttle to maintain schedule

Answer

Prepare for an upcoming tunnel

Answer

Switch to dynamic braking immediately