{TAIL ~ The same number} of signal emitting fixtures are installed between each nonstop intersection and operated by the central control device with {HEAD ~ the same frequency} of cycling 
{ TAIL ~ The same number } of signal emitting fixtures are installed between each nonstop intersection and operated by the central control device with { HEAD ~ the same frequency } of cycling
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH