Can handicap placard owners drive in the HOV lanes solo?

In many jurisdictions in the United States, handicap placard owners are allowed to drive in High Occupancy Vehicle (HOV) lanes solo. However, this varies by state and local laws, so it's important to check specific regulations in your area. Some states may require additional permits or have specific signage indicating the rules for HOV lane usage by individuals with disabilities. Always verify local traffic laws to ensure compliance.