The central version of the road traffic control system maintains nonstop flow of traffic on selected lanes of fastroads all the time by grouping the vehicles in closed columns in moving travel zones alternating with {HEAD ~ empty zones}, marked by {TAIL ~ fixtures} emitting zone marker signals controlled by central processor  
The central version of the road traffic control system maintains nonstop flow of traffic on selected lanes of fastroads all the time by grouping the vehicles in closed columns in moving travel zones alternating with { HEAD ~ empty zones } , marked by { TAIL ~ fixtures } emitting zone marker signals controlled by central processor
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