23 C.F.R. § 655.606 Higher cost materials.
Title 23 - Highways
The use of signing, pavement marking, and signal materials (or equipment) having distinctive performance characteristics, but costing more than other materials (or equipment) commonly used may be approved by the FHWA Division Administrator when the specific use proposed is considered to be in the public interest.
Title 23: Highways
PART 655—TRAFFIC OPERATIONS
Subpart F—Traffic Control Devices on Federal-Aid and Other Streets and Highways
§ 655.606 Higher cost materials.
