5Functional requirements#

5.1General operation#

The use of the TCMS shall be in accordance with the Queensland Guide to Temporary Traffic Management (QGTTM) and the Queensland MUTCD, and have the capability of operating as follows.

• when installed in groups each TCMS shall display the sign message in accordance with the planned sequence and the applicable TGS
• the hand-held device requesting the TCMS message, shall have a mechanism to confirm the requested message is displayed, and
• the TCMS shall monitor the current displayed message and if different to the requested message, shall issue an alarm after the specified switching time has elapsed.

5.2Key TCMS components and function#

The following figure of a pole-mounted TCMS shows the key components associated with the TCMS. Other mounting options include trailer mount or vehicle mount.

Local/Remote Communication · GPS sensor · Remote Sign Monitoring Computer (optional) · Hand-Held Device (HHD)

5.2.1Hand-held device (HHD)#

A hand-held device shall be provided for the selection of messages from the TCMS and to perform control and configuration of the TCMS or group of connected TCMS on-site. The HHD shall provide a mechanism to confirm that each TCMS display the intended message.

5.2.2Remote Monitoring system#

An off-site remote monitoring system may be provided as part of the TCMS solution. The purpose of the monitoring system is to log operational and historical information for later retrieval. Records shall be retained for the period defined by the Principal.

5.3Control methods#

The TCMS shall be controlled by the following means:

1. a)Locally at the TCMS, to select the display message manually.
2. b)On-site via a short-range hand-held device (HHD) to select a display message on all connected signs within the roadwork site, and to monitor the status of each sign. This is the normal mode of control.

The local TCMS operating system shall have a minimum of 99.9% operating reliability.