The North Carolina Department of Prisons inherited the making of license plates from the highway department in 1929. Plates were made at Central Prison in Raleigh until 2001 when the operation outgrew the facility. A new plant was built in 2001 at the Correctional Institution for Women in southeast Raleigh where plates are now made. It costs $1.51 to make a plate that sells for $20 a car and $30 if personalized. Last year the tag plant generated $4.1 million of revenue for the state.