1. Short title This Act may be cited as the Removing Extra Transportation Infrastructure Luxury Expenses Act or the RETILE Act . 2. Differently colored tiles in projects (a) Projects for a public facility damaged or destroyed by a major disaster (1) In general Notwithstanding any other provision of law, a State or local government, for purposes of a covered project, may not install differently colored tiles in a tunnel if— (A) the installation of such tiles is reasonably expected to incur a higher cost than the installation of same-color tiles; and (B) such government has not obtained a waiver from the Secretary of Homeland Security. (2) Waiver (A) In general A State or local government may apply for a waiver from this requirement. (B) Granting of waiver The Secretary may grant a waiver based on safety factors, historical preservation factors, or any other factor the Secretary considers relevant. (3) Covered project In this subsection, the term covered project means a project for which a State or local government receives a public assistance grant under section 406 or 428 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 5172 or 5189f). (4) Regulations Not later than 180 days after the date of enactment of this section, the Secretary shall issue regulations to carry out this subsection. (b) Projects under title 23, United States Code (1) In general Chapter 1 of title 23, United States Code, is amended by adding at the end the following: 171. Use of tiles in initial construction, replacement, or repair in tunnel projects (a) Withholding of funds for noncompliance (1) In general The Secretary shall withhold any funding for any project under this chapter if such project uses differently colored tiles in a tunnel and— (A) the installation of such tiles is reasonably expected to incur a higher cost than the installation of same-color tiles