# Openpilot — Open-Source Driver Assistance Operating System

> An open-source operating system for robotics that upgrades the driver assistance system on 300+ supported cars with adaptive cruise control and lane centering.

## Install

Save as a script file and run:

# Openpilot — Open-Source Driver Assistance Operating System

## Quick Use
```bash
# Clone and set up on a comma 3X device
git clone https://github.com/commaai/openpilot.git
cd openpilot
git submodule update --init
# Flash to comma device via USB
tools/cabana/flash_panda.py
```

## Introduction
Openpilot is an open-source operating system for robotics, primarily used to upgrade the stock advanced driver-assistance system (ADAS) in 300+ supported car models. Developed by comma.ai, it provides adaptive cruise control and automated lane centering comparable to commercial systems, running on affordable comma hardware.

## What Openpilot Does
- Provides adaptive cruise control that maintains a safe following distance
- Delivers automated lane centering on highways and well-marked roads
- Supports 300+ car models across major manufacturers including Toyota, Honda, Hyundai, and GM
- Runs driver monitoring via an interior camera to ensure attentiveness
- Streams driving data for continuous model improvement through a fleet learning pipeline

## Architecture Overview
Openpilot is built as a collection of modular processes communicating via a custom messaging framework called cereal. The driving model (a neural network) runs on a Qualcomm SoC, processing camera feeds to produce steering and acceleration commands. A safety layer (panda firmware) enforces physical limits on CAN bus messages, while a calibration system adapts to each vehicle's specific geometry and sensor placement.

## Self-Hosting & Configuration
- Requires a comma 3X device (or compatible hardware) connected to your car via a harness
- Install by flashing the openpilot image to the device's storage
- Configure vehicle-specific parameters through the on-device UI or SSH
- OTA updates are delivered automatically via the comma connect app
- Development setup supports Ubuntu 24.04 with Docker for simulation and testing

## Key Features
- End-to-end neural network driving model trained on millions of miles of real driving data
- Real-time driver monitoring system using infrared camera
- Longitudinal and lateral control with smooth, human-like behavior
- Open data pipeline that lets anyone contribute driving segments
- Extensive simulation tooling including replay and visualization via Cabana

## Comparison with Similar Tools
- **Tesla Autopilot** — closed-source, tightly integrated with Tesla hardware; openpilot is open and supports 300+ car models
- **Autoware** — focuses on full L4 autonomy research; openpilot targets practical L2 assistance for consumer cars
- **Apollo (Baidu)** — enterprise-grade autonomous driving platform; openpilot is consumer-focused with simpler hardware requirements
- **CARLA** — a simulation-only platform; openpilot runs on real vehicles with real-time control

## FAQ
**Q: Which cars does openpilot support?**
A: Over 300 models from Toyota, Honda, Hyundai, Kia, GM, Subaru, Lexus, and more. The full compatibility list is maintained in the repository.

**Q: Is openpilot safe to use on public roads?**
A: Openpilot is an L2 driver assistance system. The driver must remain attentive at all times. Safety is enforced through driver monitoring and hardware-level CAN bus limits.

**Q: What hardware do I need?**
A: A comma 3X device and a vehicle-specific harness. The comma 3X includes all necessary cameras and compute hardware.

**Q: Can I contribute driving data?**
A: Yes. When connected, driving segments are uploaded to comma's servers for fleet learning, helping improve the driving model for everyone.

## Sources
- https://github.com/commaai/openpilot
- https://comma.ai/openpilot

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Source: https://tokrepo.com/en/workflows/asset-7dc98947
Author: Script Depot