Our portable "Lane blocked, follow the flash arrow" LED sign
Left-down arrow means: right lane blocked.
Right-down arrow means: left lane blocked.
X means: road closed.
Most of them have amber LEDs, but several have red-orange LEDs.
Interesting.....with the arrows.....I mean why they use arrows...why can't they just put the blockage DIRECTLY at the lane that's blocked?
For ours....we just have arrow right at the blockage that tells to move to the next lane...like if the left lane is blocked...the flashing arrow is put on the closed lane and it flashes right to tell us to move to the right lane...and vice versa...
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![IMG_0925[1].jpg](albums/userpics/thumb_IMG_0925%5B1%5D.jpg "Filename=IMG_0925[1].jpg
Filesize=190KiB
Dimensions=1600x1200
Date added=Oct 08, 2010")
![IMG_0822[1].jpg](albums/userpics/thumb_IMG_0822%5B1%5D.jpg "Filename=IMG_0822[1].jpg
Filesize=233KiB
Dimensions=1600x1200
Date added=Sep 04, 2010")
For ours....we just have arrow right at the blockage that tells to move to the next lane...like if the left lane is blocked...the flashing arrow is put on the closed lane and it flashes right to tell us to move to the right lane...and vice versa...