2Definition of terms#
The terms defined in MRTS201 General Equipment Requirements apply to this Technical Specification. Additional terminology relevant under this Technical Specification are defined in Table 2 below.
Table 2 – Definitions
| Term | Definition |
|---|---|
| ADR | Australian Design Rules (ADRs) are national standards for vehicle safety, anti-theft and emissions. |
| CAT | Customer Acceptance Test (see MRTS201). |
| Configuration Software | Control / diagnostic software that runs on a laptop and can control, interrogate and program the DP. |
| CT | Commissioning Test (see MRTS201). |
| Default Speed | The speed limit that applies to a location in a TVSL zone when all the TVSL are blank (also known as black-out speed). |
| DOD | Depth of Discharge. |
| DP | Device Processor—the internal control processing unit hardware within the TVSL sign unit which undertakes all communication and internal processing tasks required for operation. |
| Event | Sign status change, frame change, occurrence of a fault in the DP or sign. |
| FAT | Factory Acceptance Test (see MRTS201). |
| Frame | Any stable state displayed by a TVSL on its display at any one instance of time that is preceded and followed by a change of state. |
| GIS | Geographic Information System. |
| GPS | Global Positioning System. |
| HMI | Human Machine Interface. |
| IAT | Installation Acceptance Test (see MRTS201). |
- LFS
- Local Facility Switch - a key operated device used to manually control operation of the DP.
- NATA
- National Association of Testing Authorities.
- NTP
- Network Time Protocol.
- OH&S
- Occupational Health and Safety.
- PF
- Permissible Frames - at each TVSL sign location that facilitate safe, non- conflicting traffic movement in a TVSL zone (Selection of permissible frames at a TVSL site is also known as local interlocking).
- Pixel
- The smallest discreetly controlled light emitting component of the sign dot matrix display.
- RPEQ
- Registered Professional Engineer of Queensland.
- RSCS Software
- Remote Sign Control System Software - this is the software system used to remotely operate and monitor the TVSL signs for example, from a Traffic Control Company’s Premises.
- Site Supervisor
- A person duly authorised by the traffic control site contractor or Transport and Main Roads to undertake control and monitoring of the deployed TVSL scheme. No other personnel shall undertake control of a deployed TVSL arrangement.
- SRC
- Short Range Controller - these are the (hand-held) remotes which can set a TVSL Sign to display a permitted speed limit frame.
- STREAMS
- The Principal’s traffic management system and primary user interface to ITS field devices.
- TGS
- Traffic Guidance Scheme - refer to MRTS02 Provision for Traffic.
- TMC
- The Principals' Traffic Management Centre (using STREAMS).
- TVSL
- Temporary Variable Speed Limit.
- TVSL sign
- TVSL sign is general the term covering the complete TVLS unit, including the DP, LFS, trailer / concrete block, Sign Display, Batteries, Solar Panels and associated internal electronic and mechanical components.
- TVSL Site
- The roadwork’s location at which a number of co-ordinated TVSL sign(s) are used to reduce traffic speeds. This may include a TGS approved arrangement of a number of Master / Slave TVSL sign(s) at a TVSL Site.
- UHF
- Ultra-High Frequency – 300 – 3000 MHz radio frequency spectrum band. See the ACMA website for further information.
- VPN
- Virtual Private Network.
- VSLS
- Variable speed limit sign(s) - used to display variable speeds only. Typically pole mounted.
- WH&S
- Workplace Health and Safety.