ME| Bulletin 491, issued by the Maine Bureau of Insurance, explains that under Maines Automobile Insurance Cancellation Control Act, personal auto policies may exclude specific drivers only to avoid cancellation or nonrenewal and to permit coverage to continue without unreasonable risk, and only for a named individual. Any exclusion must be in writing and signed by both the policyholder and insurer, be supported by underwriting justification tied to acts that would permit cancellation or nonrenewal, and be implemented via a Bureau?approved endorsement that clearly identifies the excluded driver, includes a conspicuous statutory notice about potential liability if the excluded person is under 18, and is signed by both parties. The endorsement must also ensure that excluded drivers are listed on evidence of insurance or financial responsibility, and the Bureau identifies obtaining the excluded drivers acknowledgment signature as a best practice while expecting insurers to maintain rules, procedures, training, and documentation to demonstrate compliance with 24?A M.R.S. § 2916?B.