The new law signed into effect by Governor Jerry Brown, California AB 2989, which was signed into law last year, and went into effect January 1st, 2019, states that individuals under the age of 18 must wear a helmet on all motorized vehicles, including electric scooters of any type. The new law now no longer requires adult riders older than 18 to wear a helmet. However, Governor Brown did leave additional safety measures up to local communities.