Implementation#

Using the TMA (as one is required as part of the TGS) for protection of the TTM ute and TMIs doing the implementation, working in the direction of traffic, the general installation order would be signs in the median (right shoulder), followed by signs on the left shoulder (the END ROADWORK sign on the left may be left until after the on-road devices are all installed) and, then, the on-road devices commencing with the merge taper where the TMA would be used to close the lane in advance of the taper location. The start of the lane closure and signs up to and including the TC station would then be installed (working in the direction of traffic). Once the TC station is in place, the TMA could be moved and positioned in its final location at the end of the taper. Noting that the arrow board on the TMA would need to be changed to 'hazard lights', not an arrow, while traveling in the right lane to access the lane closure from beyond the TC station; once the TMA is moving back into the closed lane, the arrow is to be displayed again. Traffic could then be stopped by the TC while the remaining signs in the closed lane and the delineation for the closed lane (and the END ROADWORK sign if not installed earlier) are installed.

Once all devices are in place and the TTM ute and TMIs are clear of the road, the TC releases traffic.

On completion of the implementation activities and before works commence, a drive-through of the site by the TMI (with traffic) is performed to confirm all devices are in place and the TTM measures are clear to approaching drivers and will perform as required. Drive-throughs with traffic are also a good way to check on traffic speeds and behaviour through the site (and assists to identify areas for improvement).