5Operational requirements#
5.1Key TVMS components and function#
The following figure shows the key components associated with TVMS.
TVMS on Vehicle/Trailer/Base · Supporting Structures, Pole and Brackets) · Solar Panel Array · RSCS Computer · Charging Regulator · Batteries · GPS and Other Sensors · Controller Unit (CU) · SMS Mobile Phone Alerts · LED Display · Local Facility Switch (LFS) · SRD (Handheld Short Range Device)
5.2General operation#
The use of the TVMS shall be in accordance with the Queensland Guide to Traffic Management Part 10 Transport Control – Types of Devices, and the Queensland MUTCD and have the capability of operating as follows.
5.3Control methods#
The TVMS shall be operated by selecting the following methods via the TVMS controller:
- a)Locally, when the TVMS controller has been selected for BLANK / MAINTENANCE operation using a local facility switch. This would enable operation of the TVMS through the TVMS configuration software and/or hardwired inputs to select one of a number of predetermined messages.
- b)Remotely, when the TVMS controller has been selected for NORMAL operation. This will enable operation through a hand-held short-range device (SRD) and/or remote sign control system (RSCS), which may be compatible with an existing Transport and Main Roads system, such as STREAMS.
The TVMS controller shall provide the operational interface with the SRD and RSCS.
The local TVMS operating system supported on the CU shall have a minimum of 99.9% operating reliability.
5.4Safety requirements#
All vehicle-mounted and trailer / concrete block-mounted TVMS used in safety-related applications shall only be deployed following the appropriate risk analysis undertaken to ensure safety in the event of sign failure. An example of risk mitigation option could be video monitoring of the sign face. Hold Point 3
