# Advanced Features
This section contains topics related to some of the more advanced features of the PX4 autopilot:
- Air Traffic Avoidance: ADS-B/FLARM
- Air Traffic Avoidance: UTM
- Computer Vision
- Obstacle Avoidance (needs companion computer)
- Safe Landing (needs companion computer)
- Collision Prevention (can use companion computer or sensors on flight controller)
- Path Planning Interface (Developer Interface)
- Motion Capture (MoCap)
- Visual Inertial Odometry (VIO)
- Iridium/RockBlock Satellite Communication System
- Precision Landing
- RTK GPS