On runways, green lights indicate the beginning of the runway for landing, while red lights indicate the end of the runway. Runway edge lighting consists of white lights spaced out on both sides of the runway, indicating the edge. Some airports have more complicated lighting on the runways including lights that run down the centerline of the runway and lights that help indicate the approach (an approach lighting system, or ALS). Low-traffic airports may use pilot controlled lighting to save electricity and staffing costs. COUNT 5
QSN1 On runways, what indicate the beginning of the runway for landing? ANS1 green lights QSN2 On runways, what indicate the end of the runway? ANS2 red lights QSN3 What indicates the edge of a runway? ANS3 white lights QSN4 What may low-traffic airports use to save electricity and staffing costs? ANS4 pilot controlled lighting QSN5 What does ALS stand for? ANS5 approach lighting system