Regulations last checked for updates: Feb 12, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
All TitlesTitle 40Chapter IPart 93Subpart A - Subpart A—Conformity to State or Federal Implementation Plans of Transportation Plans, Programs, and Projects Developed, Funded or Approved Under Title 23 U.S.C. or the Federal Transit Laws
View all text of Subpart A [§ 93.100 - § 93.129]
§ 93.128 - Traffic signal synchronization projects.

Traffic signal synchronization projects may be approved, funded, and implemented without satisfying the requirements of this subpart. However, all subsequent regional emissions analyses required by §§ 93.118 and 93.119 for transportation plans, TIPs, or projects not from a conforming plan and TIP must include such regionally significant traffic signal synchronization projects.

authority: 42 U.S.C. 7401-7671q.
source: 58 FR 62235, Nov. 24, 1993, unless otherwise noted.
cite as: 40 CFR 93.128
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