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