It's illegal, at least in California. https://www.dmv.ca.gov/portal/dmv/?1dmy&urile=wcm:path:/dmv_content_en/dmv/pubs/vctop/vc/d12/c5/a3.5/27400 https://www.dm

It's illegal, at least in California. https://www.dmv.ca.gov/portal/dmv/?1dmy&urile=wcm:path:/dmv_content_en/dmv/pubs/vctop/vc/d12/c5/a3.5/27400 https://www.dmv.ca.gov/portal/dmv/?1dmy&urile=wcm:path:/dmv_... "A person operating a motor vehicle or bicycle may not wear a headset covering, or earplugs in, both ears."