Negative 50V—the negative side of 50V DC which is powered or supported by a battery back-up or UPS.

See also B50—the positive side of 50V DC.   

A condition of receiving government training funds is that Registered Training Organisations (RTOs) report a range of information such as the courses and subjects in which learners are enrolled, their age and gender and where training is occurring.

This information is used at both a national and state/territory level to develop a picture of the vocational education and training sector in Australia, inform policy decisions, allow reporting of what has been achieved with public funds and assist future planning.

Reporting requirements may change as government policy changes. While every effort is made to minimise changes to reporting requirements, it is sometimes unavoidable. Be sure to keep up to date with changes in reporting requirements.

For more information on the reporting requirements in your state or territory, please contact your local state or territory training authority. 

Network Rail owns and operates the rail infrastructure in Great Britain.

Network Rail's infrastructure services private operators in two sectors:

• passenger services (commonly referred to as National Rail) and
• freight services

In a non-trailable set of points, the mechanism locks the points in position.  If a train trails through non-trailable points and the points are set in the incorrect position, the points will be forced to move and damage will occur to the points machine mechanisms.

In signalling, the attribute non-vital has a special meaning: Where incorrect operation or failure should not lead to personal injury or to damage of property or equipment.

Non-vital equipment includes train control and indication systems, etc.

Conversely, equipment with a vital attribute can cause injury or damage if they fail or are used incorrectly.

The National Training Framework (NTF) is a national system to ensure that when a VET provider is registered and the qualifications it offers are based on Training Packages or accredited courses the qualifications are recognised anywhere in Australia.

The NTF applies nationally, and is made up of:

• the Australian Quality Training Framework (AQTF)
• and Training Packages.

The NTF is a nationally consistent, industry-led system designed to:

• provide high-quality skill outcomes to maintain individuals' employability and increase their productivity,
• provide for nationally recognised qualifications,
• improve the competitiveness of enterprises and the nation.

One of DEST's roles is to develop, manage and promote national aspects of the NTF. State and territory training authorities administer the NTF.

An abbreviation for an Entrance and Exit control panel. The signaller operates a button on the control panel at the start of a route, and another button at the end of one (or more) routes. The panel will call for all signals and points within the route(s) to be set if the interlocking determines it is safe to do so.