Finding
Autonomous systems and robots share cells, sensors and AI computers but split at the actuator: a vehicle concentrates power in one to three traction motors with silicon carbide inverters, while a robot spreads it across dozens of small joints, each with its own magnet motor, reducer and driver
A Waymo Jaguar I-Pace has two traction motors; Tesla's Optimus Gen 2 has 28 body actuators and 22 more in its hands, and Boston Dynamics' production Atlas has 56 degrees of freedom. That is why humanoid volume lands on precision reducers, planetary roller screws and rare-earth magnets rather than on cells: a humanoid's 0.4-2.3 kWh battery is about one-thirtieth of an electric car's.
An autonomous system is a machine whose form was set by human operation - a car, truck, tractor, haul truck, ship or aircraft - with autonomy added to replace the operator. A robot was designed from the start as a machine that acts on its own, so there is no human-operated version to compare it with. Drones sit with robots here because they were never piloted aircraft first; cargo UAVs such as Elroy Air's Chaparral are borderline and are covered in both hubs.
The split decides the rulebook. Vehicles inherit vehicle law: FMVSS and NHTSA exemptions, state AV permits, MSHA on mine sites, FAA type certification for aircraft. Robots are regulated as machinery: ISO 10218 for industrial robots, revised in 2025 to absorb the collaborative-robot rules of ISO/TS 15066; ANSI/A3 R15.08 for mobile robots in plants; ISO 13482 for personal-care robots; and a new ISO 25785-1 in development for legged and other dynamically stable industrial robots. Sidewalk robots run under state personal delivery device laws, and drones under FAA Part 107, with Part 108 for routine beyond-line-of-sight flight still pending.
The split is narrowing in software. Tesla runs Optimus on neural networks shared with FSD and XPeng runs its IRON humanoid on the same vision-language-action models and Turing chips as its cars; Hyundai owns Boston Dynamics; Nvidia sells Drive Thor to carmakers and Jetson Thor to robot makers. See Humanoid-AV Interoperability and the Autonomy Hub.
Comparison
Autonomous systems vs. robots
| Attribute | Autonomous system | Robot |
|---|---|---|
| Origin | Human-operated machine with autonomy added | Designed as an autonomous machine |
| Form factor | Inherited from the human-operated version | Set by the task and the space it works in |
| Propulsion | One to three traction motors; SiC inverters | Dozens of joint actuators with reducers or roller screws; GaN or silicon drivers |
| Battery | 60-100 kWh (cars); 400-600 kWh (semi trucks) | 0.4-2.3 kWh (humanoids, quadrupeds); none for fixed arms |
| Sensors | Cameras, radar, lidar at vehicle scale | The same plus encoders, force-torque and tactile sensors at joint and hand scale |
| AI compute | Driving computers: Tesla FSD, Nvidia Drive Thor, Mobileye EyeQ | Robot computers: Nvidia Jetson Thor, Tesla's own, XPeng Turing |
| Autonomy scale | SAE J3016 Levels 0-5 | No equivalent scale; judged by task and supervision ratio |
| Rules | FMVSS, NHTSA, state AV law, FAA, MSHA, IMO | ISO 10218, ANSI/A3 R15.08, ISO 13482; state delivery-device laws; FAA Part 107 for drones |
| Supply chain | EV chain plus sensors and compute | EV chain plus reducers, roller screws, actuator modules and tactile sensors |
| Page | Autonomy Hub | Robots Hub |
Autonomous systems
Autonomous systems by operating domain
The domain sets the sensors and the regulator more than the vehicle type does.
| Domain | Examples | Hard problem | Regulator |
|---|---|---|---|
| Urban roads | Robotaxis (Waymo, Tesla, Baidu Apollo Go, Pony.ai), autonomous shuttles and vans | Pedestrians, cyclists and rare events | NHTSA, state DMVs and utility commissions; China city permits |
| Highways and freight | Driverless trucks (Aurora, Kodiak, Plus; Inceptio in China) | High-speed reliability, weather, breakdowns | FMCSA, NHTSA, states |
| Off-highway | Haul trucks, tractors, excavators (Caterpillar, Komatsu, Deere; EACON, Waytous) | Dust, slopes, GPS-denied pits | MSHA and site operators |
| Marine | Autonomous tugs, survey vessels, ferries | Collision rules at sea, port traffic | IMO, flag states, coast guards |
| Aviation | Cargo UAVs, autonomous eVTOLs (EHang EH216-S) | Airspace integration, detect-and-avoid | FAA, EASA, CAAC |
Robots
Robots by form factor
Form sets the actuator stack before the job is chosen.
| Form | Examples | Defining capability | Where it works |
|---|---|---|---|
| Humanoid | Tesla Optimus, Figure 03, Agility Digit, Boston Dynamics Atlas, Unitree G1, UBTech Walker S2 | Works in spaces and with tools built for people | Factories, warehouses, homes |
| Quadruped | Boston Dynamics Spot, ANYbotics ANYmal, Ghost Vision 60, Unitree B2, DEEP Robotics X30 | Stairs, grating, rubble and tunnels | Inspection, security, defense |
| Industrial arm | Fanuc, ABB, Yaskawa, KUKA, Estun, Universal Robots | Precise, repeatable motion at high duty | Production lines |
| Mobile robot (AMR) | Amazon drive units, Locus, Geek+, Hai Robotics | Moves goods across a mapped floor | Warehouses and plants |
| Sidewalk robot | Serve, Starship, Coco, Avride | Last-mile delivery at walking speed | Campuses and city sidewalks |
| Drone | Zipline, Wing, DJI, Skydio | Point-to-point flight over obstacles | Delivery, inspection, cargo |
Sources
Sources and scope
- Scope
- Autonomous Systems vs. Robots
- Sources
- ElectronsX definitions; ISO 10218-1/-2:2025; ISO/TS 15066; ANSI/A3 R15.08; ISO 13482; SAE J3016; Boston Dynamics (Atlas, Jan 2026); Tesla; Oct 2026
- Updated
- October 2026