CIDs are local government entities authorized by the local and state governments. A CID is a mechanism for funding certain governmental services including street and road construction and maintenance, parks and recreation, stormwater and sewage systems, water systems, public transportation systems, and other services and facilities. The administrative body of the CID is a Board of Directors which consists of both elected board members and appointed board members. The Board may levy taxes, fees, and assessments within the CID, not to exceed 2.5 percent of the assessed value of the real property. These taxes are then used to provide services and fund improvements for the CID.
The Hwy 278 CID exists to improve the Hwy 278 corridor. These improvements include raising property values, beautification, improve safety including bicyclists and pedestrians, etc… You can find more information here Projects.