Manual Override

A manual override command immediately suspends the autonomous agent's current decision-making loop and transfers full control authority to the human operator. This is a hard interrupt at the execution level, not a suggestion or weighted input. The autonomous planner stops generating new trajectories, and the agent enters a direct teleoperation mode or executes a predefined safe maneuver. This unconditional transfer is essential for handling edge cases outside the Operational Design Domain (ODD) where the model's confidence is inherently low.

The system must guarantee that the time from operator command issuance to agent actuation—intervention latency—falls below a strict safety threshold. This encompasses:

• Network propagation delay (command uplink)
• Deserialization and validation at the agent's onboard controller
• Actuator response time (mechanical lag)

In high-speed environments like conveyor sortation or drone swarms, this total latency budget is often required to be < 50 milliseconds to prevent collisions. Predictive displays are used to mask residual latency for the operator.

A manual override must not create a state discontinuity. The system performs a human-robot handoff that preserves the agent's full situational context, including:

• Current pose, velocity, and acceleration vectors
• Active task queue and assigned priority
• Nearby agent trajectories and collision hazards
• Recent sensor history and anomaly flags

This context is pushed to the operator workstation instantly, allowing the human to resume control without needing to re-establish situation awareness from scratch.

Every manual override event triggers a mandatory intervention logging process that records a cryptographically signed entry in the audit trail. This record captures:

• Operator identity and role (verified via Role-Based Access Control)
• Timestamp and geospatial coordinates of the override
• Reason code (e.g., perception fault, path planner divergence, external obstacle)
• Pre-override and post-override agent state snapshots

This log is essential for post-incident forensics and for building datasets to retrain the autonomous system's edge-case handling.

For high-consequence actions, manual override is gated by a consent gateway that requires explicit, multi-step confirmation before execution. This prevents accidental or impulsive overrides. Examples of gated commands include:

• Crossing a geofence into a pedestrian zone
• Engaging or disengaging a physical lock on a secured asset
• Initiating an emergency stop that halts an entire fleet zone

The gateway enforces a two-factor confirmation pattern: the operator must first select the command, then confirm intent on a separate UI element, preventing slip errors.

If the communication link is severed during a manual override session—detected via a missed heartbeat signal or watchdog timer expiry—the agent must autonomously transition to a Minimal Risk Condition (MRC) . This is not a return to prior autonomy, but a deterministic safe state:

• Mobile robots: Immediate controlled stop, engaging brakes
• Drones: Hover-in-place or controlled landing at nearest safe zone
• Conveyor systems: Graceful deceleration to zero velocity

The MRC is pre-configured per agent type and validated during run-time assurance checks.

A human-machine interaction paradigm where an operator monitors and intermittently adjusts an otherwise autonomous system, setting high-level goals rather than directly controlling every action. Manual override is a key tool within this framework, used to correct a specific agent action without changing the overall mission.

• Key Distinction: Supervisory control is strategic; manual override is tactical.
• Example: An operator sets a fleet's zone priorities (supervisory) but manually steers one robot around a spill (override).

The time delay between an operator issuing a manual override command and the remote agent executing it. This is a critical metric in remote teleoperation, encompassing network lag, signal processing, and actuator response time.

• Impact: High latency can cause operator-induced oscillations (PIOs) and instability.
• Mitigation: Predictive displays overlay a simulated, immediate-response ghost of the agent on the delayed video feed.

A security and control mechanism that requires explicit human approval before an autonomous agent can execute a high-risk or irreversible command. Unlike a standard manual override, a consent gateway is a pre-planned checkpoint, not a reactive correction.

• Use Case: Requiring operator approval before a robot arm engages a high-voltage connector.
• Relation to Override: A manual override can bypass a consent gateway in an emergency, but this action is heavily logged.

A chronologically ordered, tamper-proof record of all operator actions, system decisions, and agent states. Intervention logging specifically captures the context, reason, and outcome of every manual override event.

• Purpose: Provides a forensic log for post-incident analysis and compliance verification.
• Data Captured: Pre-override state, operator ID, command issued, and resulting agent trajectory.

A fail-safe state is a design principle ensuring a system defaults to a condition that minimizes harm on failure. A kill switch is a physical or digital emergency mechanism that immediately cuts all power to actuators.

• Distinction: A manual override is a corrective command; a kill switch is a destructive, last-resort termination.
• Example: A drone's fail-safe is a controlled landing; its kill switch is an instant motor cut-off.