AVOP Airside Markings and Lighting 2 — Questions and Answers
Question 1: What color are taxiway centerline markings?
- White
- Yellow (Correct answer)
- Red
- Blue
Correct answer: Yellow
Taxiway centerline markings are yellow, distinguishing them from white runway markings.
Taxiway centerline markings are continuous yellow lines. This yellow color is standard for all taxiway markings including edge lines and holding position markings. Runway markings are white. This color distinction helps quickly identify whether you are on a taxiway or approaching a runway.
Question 2: What do blue taxiway edge lights indicate?
- Runway edge
- Taxiway edge (Correct answer)
- Closed taxiway
- Aircraft parking position
Correct answer: Taxiway edge
Blue lights outline taxiway edges, helping navigation during low-visibility conditions.
Blue taxiway edge lights define the edges of taxiways during night and low-visibility operations. They are omnidirectional and help vehicle operators and pilots stay on the taxiway surface. They are one of the most recognizable airfield lighting features.
Question 3: What does a runway holding position marking across a taxiway indicate?
- Taxiway centerline
- Do not cross without ATC clearance (Correct answer)
- Vehicle parking boundary
- Taxiway intersection
Correct answer: Do not cross without ATC clearance
Holding position markings indicate where vehicles and aircraft must stop and hold unless cleared by ATC.
A runway holding position marking consists of four yellow lines (two solid and two dashed) across a taxiway at a runway boundary. The solid lines face the taxiway side. No vehicle may cross without explicit ATC clearance. Crossing without authorization constitutes a runway incursion.
Question 4: What color are runway edge lights?
- Blue
- Green
- White (Correct answer)
- Red
Correct answer: White
Runway edge lights are white along most of the length, changing to yellow in the last 2,000 feet.
Runway edge lights are white high-intensity lights outlining the runway edges. On instrument runways, the last 2,000 feet have yellow edge lights to signal the approaching end. Vehicle operators should recognize these to maintain awareness of their position relative to active runways.
Question 5: What does a surface-painted holding position sign look like on taxiway pavement?
- White text on green background
- Yellow text on black background
- White text on red background (Correct answer)
- Black text on yellow background
Correct answer: White text on red background
Surface-painted holding position signs have white text on a red background, matching elevated mandatory instruction signs.
Surface-painted holding position signs feature white inscriptions on a red background, matching mandatory instruction sign colors. These enhance awareness especially during low-visibility conditions when elevated signs may be harder to see.
Question 6: What is the purpose of green taxiway centerline lights?
- Indicate a closed taxiway
- Mark the taxiway centerline for low-visibility guidance (Correct answer)
- Show the boundary of the movement area
- Indicate a runway entrance
Correct answer: Mark the taxiway centerline for low-visibility guidance
Green in-pavement centerline lights provide guidance during low-visibility and night operations.
Green taxiway centerline lights are in-pavement lights along the taxiway centerline at airports conducting low-visibility operations. They supplement the yellow painted centerline. These lights may alternate green and yellow near a runway holding position as additional warning.
AVOP Airside Markings and Lighting 2
What color are taxiway centerline markings?