What visual cues signal vehicular lane changes at the airport?

Pavement markings and directional signage are essential visual cues for signaling vehicular lane changes at the airport. These cues guide drivers on how to navigate the roadway system, indicating where to change lanes and providing instructions for entering or exiting different areas of the airport. Proper use of pavement markings—such as lines, arrows, and symbols—helps maintain safety and efficiency in traffic flow, especially in busy environments like airports where multiple vehicles are in motion. Directional signage complements these markings by offering clear instructions and information about upcoming lane changes, improving overall navigation for drivers.

In contrast, the other options do not encompass the standard methods used in traffic management at airports. Traffic cones and barricades can be used in specific scenarios, such as temporary lane closures, but they are not consistent indicators for lane changes. Verbal announcements by staff might provide important real-time information but do not serve as a reliable visual cue for lane changes. Similarly, colored flags waved by personnel could be used in particular situations, but they are not a standard practice for indicating lane changes in general airport traffic management. Thus, pavement markings and directional signage remain the most relevant and effective tools for guiding vehicular movements.