The Light Arrow System is a combination of directional signs mounted on two separate segments. The upper segment can be lowered when not in use. It has a display made up of 25 separate bulbs which is able to display left and right directional arrows, an ‘X’ or four flashing bulbs in ‘Hazard mode’.
Additionally, on the upper segment two advanced warning lights flash to gain attention of the approaching motorists.
On the lower section of the board, there is a movable, retro reflective, RG17/34 that points vehicles in the correct direction in conjunction with the display on the upper segment.
The arrow board is pre-programmed with sequences including 'lane change required', 'shoulder closed' where the lights are a ‘X’ and the RG17 is showing the safe side to pass on and lastly 'follow TMA without overtaking' where the lights are an ‘X’ and the RG17 is pointing straight down.
A controller in the cabin of the host vehicle operates the arrow board. There are displays on the controller and the rear of the frame assembly that show the orientation of the arrow board.
All Light Arrow Systems feature 3M reflective sheeting applied by RTL’s 3M certified Sign Shop. The control box on the rear of the board is rated IP-65 weatherproof.
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