▁run way ▁holding ▁position ▁mark ing ▁at ▁tax i way / run way ▁inter sections . ▁ ▁Stop ▁Bar ▁L ights : ▁A ▁row ▁of ▁red , ▁un id irection al , ▁steady - burn ing ▁in - p av ement ▁lights ▁installed ▁across ▁the ▁entire ▁tax i way ▁at ▁the ▁run way ▁holding ▁position , ▁and ▁elev ated ▁steady - burn ing ▁red ▁lights ▁on ▁each ▁side ▁used ▁in ▁low ▁visibility ▁conditions ▁( below ▁ 1 , 2 0 0   ft ▁R V R ). ▁A ▁controlled ▁stop ▁bar ▁is ▁operated ▁in ▁conj unction ▁with ▁the ▁tax i way ▁center line ▁lead - on ▁lights ▁which ▁extend ▁from ▁the ▁stop ▁bar ▁toward ▁the ▁run way . ▁Following ▁the ▁A TC ▁clear ance ▁to ▁proceed , ▁the ▁stop ▁bar ▁is ▁turned ▁off ▁and ▁the ▁lead - on ▁lights ▁are ▁turned ▁on . ▁ ▁Tax i way ▁edge ▁lights ▁are ▁spac ed ▁ 7 5 ▁feet ▁apart . ▁These ▁lights ▁can ▁be ▁closer ▁together ▁at ▁tax i way ▁inter sections . ▁On ▁straight ▁segments , ▁Tax i way ▁Center line ▁L ights ▁are ▁spac ed ▁at ▁either ▁ 5 0 ▁or ▁ 1 0 0 ▁foot ▁intervals ▁depending ▁on ▁the ▁minimum ▁author ized ▁visibility . ▁On ▁cur ved ▁tax i way ▁segments , ▁Tax i way ▁Center line ▁L ights ▁may ▁be ▁required ▁to ▁be ▁closer ▁together . ▁ ▁See ▁also ▁A viation ▁Run way ▁Pav ement ▁Classification ▁Number ▁( PC N ) ▁ ▁References ▁ ▁External ▁links ▁▁▁▁ ▁Category : A ir