Evaluation of Perspective and Coplanar Cockpit Displays of Traffic Information to Support Hazard Awareness in Free Flight
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Summary
This study addresses the challenge of supporting pilot hazard awareness and conflict avoidance in the context of "free flight," a concept where pilots assume greater responsibility for maintaining separation from other aircraft. The research investigates how different cockpit display formats for traffic information affect pilot performance. Specifically, it compares two three-dimensional perspective views against a two-dimensional coplanar display (which presents horizontal and vertical data on separate planar panels). The motivation stems from inconsistent previous findings regarding the superiority of perspective displays, which often compared them only to uniplanar formats rather than the more integrated coplanar approach. The study aims to determine which display format best supports tactical planning and maneuver selection under varying workload conditions. The researchers conducted a simulation experiment involving 30 pilots, divided equally among three display conditions: two perspective formats and one coplanar format. All displays included predictive aiding vectors to indicate the point of closest pass and potential penetration of an alert zone. Participants performed 60 conflict maneuvers each, navigating around intruder aircraft in scenarios designed to vary workload (low vs. high, based on the presence of a second intruder) and conflict geometry complexity. The study measured conflict detection, avoidance maneuver characteristics, efficiency, proximity to traffic, and subjective workload ratings. The results indicated that pilots exhibited a general tendency to choose vertical maneuvers over lateral ones, a bias that was amplified when using the coplanar display. Vertical maneuvers by intruder aircraft increased pilot workload. Crucially, the coplanar display supported performance equal to or better than the perspective displays across all measured metrics. Pilots using the coplanar format experienced fewer predicted and actual conflicts and executed fewer extreme maneuvers compared to those using perspective views. The study notes that previous research suggesting perspective superiority often failed to account for the specific advantages of coplanar displays, which provide precise analog coding for both horizontal and vertical axes without the perceptual distortions inherent in perspective projections. The significance of these findings lies in challenging the assumption that three-dimensional perspective displays are inherently superior for air traffic monitoring. The study concludes that the coplanar format offers orthogonal precision that mitigates the perceptual biases and ambiguities associated with perspective displays, such as perceived vertical expansion and occlusion. By supporting equal or better conflict avoidance performance, the coplanar display represents a viable and potentially superior alternative for future cockpit designs in free flight environments. This suggests that display design should prioritize the precise integration of spatial data over the aesthetic or intuitive appeal of 3D perspective, particularly when supporting critical safety tasks like collision avoidance.
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via author_sweep_intake on 2026-05-27.
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | author_sweep | — | — | 2 | 2026-05-27 |
| archive | success | canonical_url | — | — | 17 | 2026-06-09 |
| extract | success | cached | — | — | 2 | 2026-06-10 |
| clean | success | clean | — | — | 1 | 2026-06-09 |
| chunk | success | chunk | — | — | 1 | 2026-06-09 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-09 |
| enrich | skipped | — | — | — | 4 | 2026-07-02 |
| promote | success | — | — | — | 1 | 2026-06-04 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 8 | 2026-06-11 |
| verify | success | — | — | — | 1 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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