REC Signal Systems & Communication

Question 1

What does a red signal typically indicate in railroad operations?

Accepted Answer

Stop

Answer

Proceed with caution

Answer

Speed limit change

Answer

Track switching

Question 2

What is the purpose of Positive Train Control (PTC)?

Accepted Answer

Prevent unsafe train movements

Answer

Enhance train lighting

Answer

Monitor passenger counts

Answer

Increase cargo space

Question 3

What system uses track circuits to detect train presence?

Accepted Answer

Block signal system

Answer

Intercom system

Answer

Echo sensor

Answer

Wi-Fi beacon

Question 4

What color is typically used for an approach signal?

Accepted Answer

Yellow

Answer

Red

Answer

Green

Answer

Blue

Question 5

How are radio communications used in train operations?

Accepted Answer

Operational instructions and coordination

Answer

Track announcements

Answer

Music broadcasts

Answer

Advertising

Question 6

Who typically authorizes train movements via dispatcher instructions?

Accepted Answer

Train dispatcher

Answer

Conductor

Answer

Locomotive engineer

Answer

Maintenance crew

Question 7

Which system transmits signal aspects directly into the locomotive cab?

Accepted Answer

Cab signal system

Answer

Block signage

Answer

PTC

Answer

Radio tones

Question 8

What does a flashing yellow signal typically mean?

Accepted Answer

Advance approach

Answer

Stop immediately

Answer

Resume full speed

Answer

Track out of service

Question 9

Why must engineers acknowledge signal changes in PTC-equipped locomotives?

Accepted Answer

To prevent automatic braking

Answer

To increase speed

Answer

To alert nearby trains

Answer

For logging purposes only