Maryland has adopted COMAR 11.18.04.01 through .04. Among other provisions, the rules require insurers to participate in the Motor Vehicle Administration's Online Insurance Verification (OLV) program, which helps verify insurance policies in real time. Additionally, on at least a weekly basis, insurance companies are required to submit a report of all active policies in an electronic format determined by the Administration.
Please see COMAR 11.18.04.01 through .04 for more information.