WWV-synchronized safety blinkers

Each standalone traffic safety blinker (the units that sit atop barriers, safety barrels, etc.) would be equipped with a WWV receiver and a rotary selection switch that would select a blinking pattern. In simplest form, there would be an ten-position switch which would select a delay from 0.0 to 0.9 seconds off the WWV time signal. If a row of ten barrels had the switches set from 0 to 9, the lights on the barrels would flash once per second in sequence.

Using this approach, it would be possible to offer motorists additional information in a using blink sequences. Some conventions would probably have to be invented, but blink sequences could be used to distinguish between barriers that mark the right edge of a road, a division between lanes travelling in the same direction, the left edge of a lane and road, or a division between lanes travelling in opposite directions.

Although some places have permanently-installed road signs that blink in synchronized fashion, I am unaware of any wireless units that do so using a global synchronizing signal.