Files
PX4-Autopilot/docs/en/releases/main.md
Anil Kircaliali 03bf4a5e95 feat(commander): add failsafe for traffic avoidance system (#27887)
* feat(commander): add traffic avoidance system failsafe

* test(commander): add tests for traffic avoidance failsafe

* docs(parameters): add COM_ARM_TRAFF migration notes

* fix(failsafe): use a shared header instead of hard-coding enum literals

* fix(commander): clear stale traffic avoidance unhealthy flag when check disabled

* refactor(failsafe): rename failsafe_mode_params.h to failsafe_action_modes.h

* docs(adsb_flarm): fix formatting in traffic avoidance parameter table

---------

Co-authored-by: Claudio Chies <chiesc@chies.com>
2026-07-23 13:26:11 -07:00

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# PX4-Autopilot Main Release Notes
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This contains changes to the PX4 `main` branch that are not included in the next release ([PX4 v1.18](../releases/1.18.md)).
::: warning
PX4 v1.18 is in beta testing.
Update these notes with features that are going to be in `main` (PX4 v1.19 or later) but not the PX4 v1.18 release.
:::
## Read Before Upgrading
Please continue reading for [upgrade instructions](#upgrade-guide).
## Major Changes
- TBD
## Upgrade Guide
- `COM_ARM_TRAFF` has been replaced by `COM_TRAFF_AVOID`. The old value 3 ("enforce for mission modes only") is migrated to `COM_TRAFF_AVOID=2`, which blocks arming in all modes, not just mission modes. If you relied on being able to arm manually with traffic detected, set `COM_TRAFF_AVOID=1` (warning only) instead.
## Other changes
- Fast mission Return modes ([RTL_TYPE](../advanced_config/parameter_reference.md#RTL_TYPE) = 2 and 4) now skip `DO_JUMP` commands (loops) while following the mission path. ([PX4-Autopilot#26993: fix(navigator): goToNextPositionItem skip loops when required](https://github.com/PX4/PX4-Autopilot/pull/26993))
### Hardware Support
- TBD
### Common
- TBD
### Control
- TBD
### Safety
- [Geofence Aware Return mode](../flight_modes/return.md#geofence_awareness). ([PX4-Autopilot#27145: feat(navigator): Geofence Aware RTL](https://github.com/PX4/PX4-Autopilot/pull/27145), [PX4-Autopilot#28001: docs(navigator): [geofence] added some more warnings about limitations](https://github.com/PX4/PX4-Autopilot/pull/28001)).
### Estimation
- TBD
### Sensors
- TBD
### Simulation
- TBD
### Debug & Logging
- TBD
### Ethernet
- TBD
### uXRCE-DDS / Zenoh / ROS2
- TBD
### MAVLink
- TBD
### RC
- TBD
### Multi-Rotor
- TBD
### VTOL
- TBD
### Fixed-wing
- TBD
### Rover
- TBD
### ROS 2
- TBD