Transition of Control: Automation Giving Back Control to the Driver
DOI: 10.54941/ahfe100648
archive: archived pipeline: cataloged verified
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Summary
This paper investigates the "transition of control" in automated driving, specifically focusing on the handover of vehicle control from an automated system back to the human driver. As automotive technology shifts toward partial automation, systems will operate only under specific conditions, necessitating safe and effective transitions between manual and automated modes. The study addresses the lack of established guidelines for designing these transitions by using TNO’s Virtual Tow Bar (VTB) system as a case study. The VTB is an automated driving system that controls longitudinal and lateral motion to maintain very short following distances (0.2–0.3 seconds) for fuel efficiency, requiring a structured procedure for engaging and disengaging the system to ensure safety. The research employed a high-fidelity driving simulator experiment with 16 participants. The VTB system was modeled using Cooperative Adaptive Cruise Control and Lane Keep Assist algorithms. Participants drove on a motorway behind a lead vehicle, activating the VTB system and then deactivating it upon seeing a sign. The study manipulated four parameters during the transition: the type of feedback (instant audible signal vs. a 5-second countdown), the method of initiation (button press vs. brake pedal), the timing for distance adjustment (10 vs. 15 seconds), and the following distance (0.1s, 0.3s, or 0.8s time headway). The primary focus was evaluating driver behavior immediately after regaining control, specifically measuring reaction times to braking events and steering performance in curves. The results indicated that drivers exhibited significantly longer reaction times to a braking lead vehicle after driving with the automated system compared to the baseline manual driving condition. This delay persisted despite comparable time headways at the start of the braking event, suggesting a temporary degradation in situation awareness or mode switching capability. Regarding steering behavior, drivers utilized a larger range of steering wheel angles immediately after switching off the VTB compared to manual driving, though the number of steering reversals remained comparable. The study found no significant differences in steering effort or lateral lane deviation between the various switching-off strategies (e.g., instant vs. countdown feedback). However, data variability was high, and the small sample size prevented statistically robust conclusions regarding the specific impact of individual parameters. The authors conclude that the transition from automated to manual control compromises safety due to increased driver reaction times. They suggest that this risk could be mitigated by temporarily increasing the sensitivity of autonomous emergency braking systems immediately after the driver regains control. The larger steering wheel range observed post-transition suggests drivers may be unaccustomed to vehicle dynamics or verifying control authority. The study highlights the need for further investigation into supporting drivers during the re-engagement phase and emphasizes that current transition designs do not fully restore immediate driver readiness, necessitating additional safety precautions during the handover period.
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.
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-06-05 |
| archive | success | canonical_url | — | — | 1 | 2026-06-09 |
| extract | success | cached | — | — | 2 | 2026-06-09 |
| clean | success | clean | — | — | 1 | 2026-06-07 |
| chunk | success | chunk | — | — | 1 | 2026-06-07 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-07 |
| promote | success | — | — | — | 1 | 2026-06-05 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-09 |
| tag | success | vector_similarity | — | — | 15 | 2026-06-11 |
| verify | success | — | — | — | 1 | 2026-06-09 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-09; verification: verified.
Topics
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- takeover transitions
- automation
- automation surprise
- manual
- teleoperation remote driving
- automation complacency bias
Information type
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- Theoretical Contribution: conceptual framework