### Question
How does AID HIGHWAYS define project to maintain minimum levels of retroreflectivity?


### Answer
Under *23 U.S.C. § 148*, **project to maintain minimum levels of retroreflectivity** is defined as:

> a project that is designed to maintain a highway sign or pavement marking retroreflectivity at or above the minimum levels prescribed in Federal or State regulations

#### Citation:
  - *23 U.S.C. § 148*
  - Heading: **CHAPTER 1-FEDERAL-AID HIGHWAYS**

