PTS On-Track Plant and Machinery Safety

Question 1

What is 'On-Track Plant' (OTP) in the context of railway safety?

Accepted Answer

Machines and vehicles that travel on railway rails and are used for track maintenance

Answer

Vegetation growing along the railway embankment

Answer

Electrical infrastructure mounted on overhead gantries

Answer

Fixed signalling equipment installed in the track

Question 2

A road-rail vehicle (RRV) operating within a safe system of work is dangerous to track workers because:

Accepted Answer

Workers can be struck or crushed by the plant within the worksite, even in a possession or blocked line

Answer

RRVs always travel faster than conventional trains

Answer

RRVs only travel at night so visibility is always poor

Answer

RRVs are exempt from the Safe System of Work requirements

Question 3

Before any On-Track Plant begins moving on or near where people are working, the OTP operator should:

Accepted Answer

Sound an audible warning and ensure all workers are clear of the plant's movement area

Answer

Move immediately without warning to avoid disrupting the work schedule

Answer

Rely on the COSS to physically move all workers out of the way

Answer

Only move when at least five workers are present as spotters

Question 4

What is the 'working envelope' of a piece of On-Track Plant?

Accepted Answer

The full three-dimensional area that the machine's moving parts can reach during operation

Answer

The paperwork required before the plant can be operated

Answer

The distance the machine can travel in one shift

Answer

The maximum speed at which the plant can be driven

Question 5

When a road-rail vehicle needs to travel along the line through a section of track where workers are present, who is responsible for ensuring the workers are positioned safely?

Accepted Answer

The COSS, who must coordinate with the OTP operator and ensure all workers are in a safe position before authorising movement

Answer

The OTP operator alone, as they control the machine

Answer

Each individual worker, who must independently decide whether to move

Answer

The signaller, who controls all plant movements via signal

Question 6

Which of the following is a specific hazard presented by tamping machines or ballast regulators that does NOT apply to conventional passing trains?

Accepted Answer

They discharge ballast, raise track, or eject material laterally during operation, which can injure nearby workers

Answer

They travel at speeds above 100 mph

Answer

They are always electrified at 25kV

Answer

They cannot be stopped once they begin moving