These plates are issued to carpool commuter vans transporting passengers to work, such as the “Easy Street” vans seen around the state.
This type started in 1980. The officially-issued plates have always been blue on white, changing to the generic “blue fade” base in 2000.
Shortly after this type was introduced, Van Pool became Vanpool.
1980s Sample, with a mix of round and square 0s
Map base, ca. 1990s