cost-saving measure. When front plates became mandatory again in 1987, the design of the 1976 white-on-blue base was changed in order to distinguish between plates issued in pairs and rear-only plates, with a state shape added in the top left corner and the "Constitution State" slogan moved from the top to the bottom. The current sky blue base was introduced in January 2000. Between September 2000 and August 2002, all remaining 1957–74 and 1976–99 plates were replaced with plates on this base bearing the same serials. Hence, serials issued in 1957 can be seen on the current base. Plate stickers continued to be issued through August 2006 (the last being used for August 2008 expirations). From September 2006 through July 2010, windshield stickers were used instead (the last being used for July 2012 expirations); these were discontinued after the Connecticut Department of Motor Vehicles began allowing police agencies to use license plate scanners to verify registrations. Notes 1 Plus remakes of serials issued on previous bases: 123–456 and AB-1234 formats 1 Plus remakes of serials issued on previous bases: 123–456, AB-1234, and 123-ABC formats (serials from 100-AAA to 999-NZM) 2 Plus remakes of serials issued on previous bases: 123–456, AB-1234, and 123-ABC formats (serials from 100-AAA to 999-NZM) Current plate types Non-passenger types A number of non-passenger types now use the AB·12345 serial format introduced on passenger plates in 2015. Optional issues Annual types Political types On both flat blue on white and Preserve the Sound bases: Assistant Majority Leader Assistant Minority Leader Deputy Majority Leader Deputy Minority Leader Municipality codes State agency plates Most state agencies in Connecticut register their vehicles with state plates. The plate starts with a number to represent the agency that owns the vehicle. Some agencies, such as the Connecticut State Police, register some vehicles using regular passenger or combination plates. References External links Connecticut license plates, 1969–present Connecticut Transportation in Connecticut Connecticut transportation-related lists