You know the ones,flashing light on top,usually used as lane changers.
How do they manage to get them to flash in the correct sequence ?
I don’t think they’re hardwired…is it a wi-fi/bluetooth type of setup ?
How many cones (or what distance can be covered) before the flashing sequence restarts ?
These questions flashed through my mind today,as I did my daily ‘dice with death’…joining the M1 southbound from the M45,using possibly the shortest slip road in the developed world 
Just a knack of the boys setting 'em up…watch them do it…you can see them working it out in there head when the button needs pushing…get an old hand on it and they can get them lanes looking like a runway!
TaperLamp
They communicate by infra red and it doesn’t matter in which order they are placed.
Taken from another website.
you’ve spoilt it now…
fingermissing:
TaperLampThey communicate by infra red and it doesn’t matter in which order they are placed.
Taken from another website.
Sad as it seems but I’ve always wondered about the answer to this. Thanks Fingermissing
Hit 1 and the flash blue 
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jimjam150975:
Hit 1 and the flash blueSent from my SM-G900F using Tapatalk
Sent from my SM-G900F using Tapatalk
Hit 1 and they flash blue
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Dose anybody else try to race them 
or is it just me .Never one yet still time.
fingermissing:
TaperLampThey communicate by infra red and it doesn’t matter in which order they are placed.
Taken from another website.
True.
I asked my best mate, who has worked on motorways for years, how they worked, and he told me the same.
Ken.
You’ve spoils it now.
An Irish driver was so convinced there were leprechauns talking to each other in the lamps
fingermissing:
Dose anybody else try to race them
Hmm. What would happen if you “acquired” one of these IR transmitters (from the top of a cone perhaps) and mounted it on the dashboard? Your own personal Roadworks Mexican Wave?