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At night with low flows? Providing the relevant Highway Authority is OK with it, why not? Although I’d question why such a long length is needed before saying “Yes” if it was my decision to make. I’ve seen it done (with convoying) over a distance of about half a mile in daylight, it worked reasonably well. Fortunately for those concerned. I’ve seen such a set up overseas over a distance of several kilometres – that was an experience!
I’d strongly suggest the signals be run manually in such a situation, as the range of the signal’s wireless communication kit is unlikely to be effective over such long distances. This will especially be the case if the terrain makes line of sight obscured. Two-way radios would be advisable, with the radios being tested in the proposed operating locations a few days before work starts, just in case reception isn’t good.
If each stop location is staffed, then a couple of cones could, perhaps, be dropped into the open lane after the last known vehicle has passed to help drivers resist the urge to jump a red light. Said cones being removed before the platoon coming the other way arrives obviously.