PTS Safe Systems of Work 3

Question 1

Which of the following best describes a 'Blocking' arrangement in railroad safety?

Accepted Answer

Using signals and rules to prevent train movements into a work area

Answer

Blocking uses operational rules and signal systems to prevent train movements from entering the limits of a designated work area.

Question 2

A PIC must hand back a SSoW authority before the stated expiry time if work is completed early. Why is this important?

Accepted Answer

So train operations can resume or other work can begin safely within those limits

Answer

Handing back authority promptly allows the controlling authority to restore normal train operations or reassign the limits, preventing unnecessary delays.

Question 3

Under what circumstance is it acceptable to extend the time limits of an active SSoW without contacting the controlling authority?

Accepted Answer

It is never acceptable — extensions must always be authorized

Answer

Time limits on a SSoW cannot be self-extended; any extension must be formally requested from and granted by the controlling authority.

Question 4

What action must a PIC take if radio or communication equipment fails during an active SSoW?

Accepted Answer

Immediately stop work and establish an alternative communication method or withdraw from the SSoW

Answer

Loss of communication is a critical safety failure; the PIC must stop work immediately and either restore communication or formally withdraw from the SSoW.

Question 5

What does the term 'absolute block' mean in the context of protecting a work site?

Accepted Answer

No train movement is permitted into the protected section under any circumstances

Answer

An absolute block means no train movement whatsoever is permitted into the protected limits, providing the highest level of track protection.

PTS - Personal Track Safety Practice Test

PTS - Personal Track Safety Practice Test

PTS Safe Systems of Work 3