Nevada DOT has used signs in the past that indicated the contractor and other entities with input to the project. Original sign designs listed contractor name, DOT, and other entities (FHWA, city, county, etc.). In addition, the funding source was shown on the signs. Later versions showed the DOT logo, the contractor name, a brief description of the project, and a phone number of the District Office that people could call for information, complaints, etc.
Typically the projects where the signs were installed were very high-profile and high-cost projects. The signs were intended as a method to promote the DOT to the public, but the signs were too small to read, especially at freeway speeds, and therefore were not very beneficial. New management has been named and the use of the signs has been discontinued.