Self-Driving Car Laws by State
Autonomous vehicle regulation in the United States is primarily handled at the state level, creating a patchwork of laws and frameworks. This page combines regulatory context with real incident data from each state.
State Regulation Landscape
- →AV incidents have been reported in 52 U.S. states and territories.
- →Top states by incidents: California (2,838), Texas (726), Arizona (583).
- →California alone accounts for 44% of all reported AV incidents.
The Regulatory Landscape
There is no single federal law governing autonomous vehicles in the United States. While NHTSA sets vehicle safety standards and collects incident reports, individual states determine whether and how autonomous vehicles may operate on their roads. As of 2025, over 30 states have enacted legislation or executive orders related to autonomous vehicles.
The approach varies dramatically. California has one of the most comprehensive regulatory frameworks, requiring permits for both testing and commercial deployment, along with detailed incident reporting. Arizona took an early permissive stance under executive order, attracting companies like Waymo and Uber to test there. Texas has minimal AV-specific regulation, operating under general traffic laws. Some states have no AV legislation at all.
NHTSA incident data covers 52 states and territories, with incidents concentrated in states where AV companies actively operate fleets or where consumer ADAS vehicles are most popular. The distribution of incidents reflects both regulatory openness and population density.
Key Regulatory Approaches
- Permit-based (e.g., California): Companies must obtain testing and/or deployment permits, submit regular reports, and comply with specific safety requirements. This approach provides the most data but can slow deployment.
- Executive order (e.g., Arizona): The governor authorizes AV operation without specific legislation. This allows faster deployment but with less regulatory structure.
- Legislation-based (e.g., Florida, Nevada): State legislatures have passed specific AV laws defining requirements for testing and deployment, insurance, and liability.
- No specific regulation (e.g., many states): AVs operate under existing traffic laws. This creates uncertainty for companies but doesn't explicitly prohibit operations.
Federal vs. State Authority
The federal government (through NHTSA) regulates vehicle design and safety standards, while states regulate vehicle registration, licensing, insurance, and traffic laws. This division means a vehicle can be federally compliant but may not be authorized to operate autonomously in a particular state. Congress has repeatedly attempted to pass comprehensive AV legislation (the AV START Act, SELF DRIVE Act) but none have become law as of early 2025.
State Incident Data
States with reported autonomous vehicle incidents, sorted by total incidents.