RTILS stands for which of the following?

RTILS stands for which of the following?

• A. Runway Track Identification Lights
• B. Runway Threshold Identification Lights
• C. Runway Terminal Identification Lights
• D. Runway Transport Identification Lights

Answer: (B)

RTILS are the lights that mark the beginning of the usable runway, helping pilots identify the threshold on approach, especially in low visibility or at night. This identification helps ensure the aircraft is lined up with the correct threshold and not mistaking the start of the runway for another feature. The term specifically refers to identifying the threshold location, rather than marking the entire runway or any terminal areas. Other named options describe concepts that aren’t standard lighting used to identify the threshold.

RTILS are the lights that mark the beginning of the usable runway, helping pilots identify the threshold on approach, especially in low visibility or at night. This identification helps ensure the aircraft is lined up with the correct threshold and not mistaking the start of the runway for another feature. The term specifically refers to identifying the threshold location, rather than marking the entire runway or any terminal areas. Other named options describe concepts that aren’t standard lighting used to identify the threshold.