Uhlelo lokuqala lokukhanyisa umzila wezindiza zezindiza lwaqala ukusetshenziswa e-Cleveland City Airport (manje eyaziwa ngokuthi i-Cleveland Hopkins International Airport) ngo-1930. Namuhla, uhlelo lokukhanyisa ezikhumulweni zezindiza luya ngokuya luyinkimbinkimbi. Njengamanje, uhlelo lokukhanyisa ezikhumulweni zezindiza luhlukaniswe ikakhulukazi uhlelo lokukhanyisa okusondelayo, uhlelo lokukhanyisa kokufika, kanye nohlelo lokukhanyisa amatekisi. Lezi zinhlelo zokukhanyisa zihlangene zenza umhlaba wokukhanya omibalabala ezikhumulweni zezindiza ebusuku. Ake sihlole lezi eziyimilingoizinhlelo zokukhanyisandawonye.

Sondela uhlelo lokukhanyisa

I-Approach Lighting System (ALS) iwuhlobo lokukhanyisa okuyisizayo kokuzulazula okuhlinzeka ngereferensi ephawulekayo yokubuka indawo nesiqondiso sendlela yokungena emzileni wezindiza lapho indiza ifika ebusuku noma lapho ingabonakali khona. I-approach lighting system ifakwe ekupheleni kwendlela yendiza futhi iwuchungechunge lwamalambu avundlile,izibani ezikhanyayo(noma inhlanganisela yakho kokubili) enabela ngaphandle ukusuka kumzila wezindiza. Amalambu okusondela ngokuvamile asetshenziswa emigwaqweni yezindiza enezinqubo zethuluzi, okuvumela abashayeli bezindiza ukuthi bahlukanise ngokubonakalayo indawo yendiza nokubasiza baqondanise umzila wezindiza lapho indiza isondela endaweni enqunywe kusengaphambili.

Sondela ukukhanya komugqa omaphakathi

Qala ngesithombe sangaphambilini. Lesi sithombe sibonisa izibani zeqembu zesistimu yokukhanyisa indlela. Okokuqala sibheka amalambu e-centerline yokusondela. Ngaphandle komzila wezindiza, imigqa emi-5 yezibani ezikhanyayo ezishintshashintshayo ezimhlophe zizofakwa kusukela emugqeni wokunwetshwa womugqa ophakathi nendawo ngamamitha angu-900, kube nemigqa emiswe njalo ngamamitha angu-30, inwebe ize iyofika emnyango womzila wezindiza. Uma kungumzila wezindiza olula, izikhala ze-longitudinal zokukhanya zingamamitha angu-60, futhi kufanele zinwebe okungenani amamitha angu-420 ekunwetshweni komugqa omaphakathi womzila wezindiza. Kungase kudingeke usho ukuthi ukukhanya esithombeni ku-orange ngokucacile. Nokho, bengicabanga ukuthi bekuwolintshi, kodwa empeleni kumhlophe okuguquguqukayo. Mayelana nokuthi kungani isithombe sibukeka siwolintshi, kufanele sibuzwe ngumthwebuli wezithombe

Enye yezibani ezinhlanu phakathi nendawo ye-approach centerline itholakala ncamashi emugqeni wokunweba we-centerline, ukusuka kumamitha angu-900 kuya kumamitha angu-300 ukusuka emugqeni wokunweba we-centerline. Zakha umugqa wemigqa yokukhanya ekhanyayo ngokulandelana, ekhanyisa kabili ngomzuzwana. Uma ubheka ezansi endizeni, leli sethi lezibani lalibaniza lisuka kude, libheke ngqo ngasekugcineni komzila wezindiza. Ngenxa yokubukeka kwayo njengebhola elinoboya obumhlophe eligijima ngokushesha libheke emnyango wesitimela, liqanjwe ngokuthi “unogwaja”.

Sondela izibani ezivundlile

Izibani eziguquguqukayo ezivundlile ezimhlophe ezisethwe kwinani eliphelele lebanga elingamamitha angu-150 ukusuka emngceleni wendlela yendiza zibizwa ngokuthi amalambu avundlile. Izibani ezivundlile zokusondela zibheke emgqeni omaphakathi womzila wezindiza, futhi uhlangothi lwangaphakathi lohlangothi ngalunye luqhele ngamamitha angu-4.5 ukusuka kumugqa omaphakathi onwetshiwe womzila wezindiza. Imigqa emibili yezibani ezimhlophe kumdwebo, ezivundlile kuya ku-centerline lightline futhi zinde kune-centerline lightline yokusondela (uma ucabanga ukuthi ayiwolintshi, angikwazi ukukwenza), amasethi amabili amalambu avundlile. Lezi zibani zingabonisa ibanga eliphakathi komzila wezindiza futhi zivumele umshayeli ukuthi alungise ukuthi amaphiko endiza avundlile yini.