LEC Track & Signal Systems 2

Question 1

What does a 'Slow Clear' signal aspect require the engineer to do?

Accepted Answer

Proceed through the turnout at or below the slow speed limit, then resume normal speed

Answer

Stop and contact the dispatcher before proceeding

Answer

Reduce to restricted speed and be prepared to stop short of any obstruction

Answer

Proceed at the maximum authorized speed for the territory

Question 2

Under FRA track classification standards, what is the maximum freight train speed on Class 1 track?

Accepted Answer

10 mph

Answer

5 mph

Answer

15 mph

Answer

20 mph

Question 3

What does an Absolute Block system ensure in railroad operations?

Accepted Answer

That only one train occupies a block section at any given time

Answer

That all signals automatically reset to Stop when power fails

Answer

That PTC overrides the engineer whenever a rule violation is detected

Answer

That all trains operate at the same speed within a division

Question 4

What is 'dark territory' in the context of railroad signal systems?

Accepted Answer

A section of railroad where no wayside signals or PTC exist, requiring train order or track warrant authority

Answer

Track segments that are temporarily closed for maintenance after sunset

Answer

Areas where cab signals are required because wayside signals are not visible

Answer

Track rated for slow speeds due to insufficient lighting at grade crossings

Question 5

When a 'Medium Approach' signal is displayed, the engineer must:

Accepted Answer

Proceed at medium speed and prepare to stop at the next signal

Answer

Stop immediately and contact the dispatcher

Answer

Proceed at restricted speed through the next block

Answer

Reduce to medium speed and expect the next signal to be clear

Question 6

What is the primary role of a Centralized Traffic Control (CTC) system?

Accepted Answer

To allow a central dispatcher to remotely control signals and switches over a large territory

Answer

To automatically couple and decouple cars at classification yards

Answer

To record and report all locomotive speed violations to the FRA

Answer

To manage locomotive fuel distribution across a railroad division

Question 7

What does 'track authority' mean for a locomotive engineer in non-signaled territory?

Accepted Answer

The legal permission to occupy and operate over a defined segment of track

Answer

The engineer's FRA-issued license to operate on a specific railroad line

Answer

The maximum speed the locomotive is mechanically rated to achieve

Answer

The dispatcher's verbal confirmation that the locomotive is mechanically fit