Free AVOP Airside Markings and Lighting Questions and Answers 1 — Questions and Answers
Question 1: While driving on a taxiway, you observe that the centerline lights have changed from solid green to an alternating green and yellow pattern. What does this indicate?
- You are approaching a vehicle service road crossing.
- You are within an Instrument Landing System (ILS) critical area and must exit promptly. (Correct answer)
- You are approaching a designated aircraft parking apron.
- The taxiway is about to merge with another taxiway.
Correct answer: You are within an Instrument Landing System (ILS) critical area and must exit promptly.
Alternating green and yellow taxiway centerline lights are used to provide visual guidance to pilots and vehicle drivers that they are within the runway environment or an Instrument Landing System (ILS) critical area. These areas must be kept clear for aircraft operations, especially during low visibility conditions.
Question 2: You are operating a vehicle on the airside at night and need to proceed along a taxiway. What color lights should you expect to see outlining the edges of the taxiway?
- White
- Green
- Blue (Correct answer)
- Yellow
Correct answer: Blue
Taxiway edge lights are always blue to distinguish them from runway edge lights, which are white. This color coding is a critical safety feature to prevent accidental incursion onto a runway.
Question 3: A large white 'X' marking is painted on a runway surface. Which of the following does this marking signify?
- A designated helicopter landing area.
- The runway is temporarily unserviceable and closed to all operations. (Correct answer)
- An intersection with another runway.
- The designated touchdown zone for landing aircraft.
Correct answer: The runway is temporarily unserviceable and closed to all operations.
A large white 'X' indicates that a runway or aerodrome is unserviceable and closed. If the closure is temporary, these markings might be placed at each end of the runway. For permanent closures, all runway markings are obliterated and crosses are placed along its length.
Question 4: As a vehicle operator approaching a runway holding position, you see a pair of elevated, flashing yellow lights, one on each side of the taxiway. What are these lights called and what is their primary purpose?
- Taxiway Edge Lights; to define the taxiway boundary.
- Stop Bar Lights; to signal that it is unsafe to cross the runway.
- Runway Guard Lights; to enhance the conspicuity of the runway holding position. (Correct answer)
- Clearance Bar Lights; to indicate an intersecting taxiway.
Correct answer: Runway Guard Lights; to enhance the conspicuity of the runway holding position.
Runway Guard Lights consist of either elevated flashing yellow lights or a row of in-pavement yellow lights at the runway holding position. Their primary purpose is to warn pilots and vehicle operators that they are approaching an active runway, thereby helping to prevent runway incursions, especially in low visibility conditions.
Question 5: You are driving on an airside service road that is delineated by white markings. This road intersects with a taxiway, which is marked with yellow lines. At the intersection, which of the following is the correct procedure?
- Vehicles on the service road have the right-of-way over taxiing aircraft.
- Proceed with caution as vehicles and aircraft have equal right-of-way.
- Come to a complete stop and yield the right-of-way to all aircraft. (Correct answer)
- Sound your horn to alert aircraft of your intention to cross.
Correct answer: Come to a complete stop and yield the right-of-way to all aircraft.
Aircraft always have the right-of-way over vehicles on the airside. Vehicle roadway markings are white, while taxiway markings are yellow. When a vehicle road intersects a taxiway, the vehicle operator must stop and yield to any taxiing aircraft. This is a fundamental rule of airside safety.
Question 6: Which of the following correctly identifies the colors and purpose of vehicle roadway markings on the airside?
- Yellow dashed lines to separate lanes and solid yellow lines for the edges.
- Red solid lines to delineate the roadway, indicating a restricted area.
- Blue dashed lines to show it is a shared path with taxiing aircraft.
- White solid lines for the edges and a white dashed line to separate lanes. (Correct answer)
Correct answer: White solid lines for the edges and a white dashed line to separate lanes.
Vehicle roadway markings are used to define a path for vehicles on areas that may also be used by aircraft. These markings are white. They consist of solid white lines to delineate the edges of the roadway and dashed white lines to separate lanes. Sometimes 'zipper' style markings are also used for the edges.
Free AVOP Airside Markings and Lighting Questions and Answers 1
While driving on a taxiway, you observe that the centerline lights have changed from solid green to an alternating green and yellow pattern.
What does this indicate?