{"data":{"id":"us/40-cfr-appendix-c-to-part-1037","jurisdiction":"us","citation":"40 CFR Appendix C to Part 1037","heading":"Appendix C to Part 1037—Emission Control Identifiers","body":"This appendix identifies abbreviations for emission control information labels, as required under § 1037.135.\nVehicle Speed Limiters\n—VSL—Vehicle speed limiter\n—VSLS—“Soft-top” vehicle speed limiter\n—VSLE—Expiring vehicle speed limiter\n—VSLD—Vehicle speed limiter with both “soft-top” and expiration\nIdle Reduction Technology\n—IRT5—Engine shutoff after 5 minutes or less of idling\n—IRTE—Expiring engine shutoff\nTires\n—LRRA—Low rolling resistance tires (all)\n—LRRD—Low rolling resistance tires (drive)\n—LRRS—Low rolling resistance tires (steer)\nAerodynamic Components\n—ATS—Aerodynamic side skirt and/or fuel tank fairing\n—ARF—Aerodynamic roof fairing\n—ARFR—Adjustable height aerodynamic roof fairing\n—TGR—Gap reducing tractor fairing (tractor to trailer gap)\nOther Components\n—ADVH—Vehicle includes advanced hybrid technology components\n—ADVO—Vehicle includes other advanced-technology components (i.e., non-hybrid system)\n—INV—Vehicle includes innovative (off-cycle) technology components\n—ATI—Automatic tire inflation system\n—TPMS—Tire pressure monitoring system","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1037—CONTROL OF EMISSIONS FROM NEW HEAVY-DUTY MOTOR VEHICLES"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"7a2f6bbf3d1876e21237dde400694d2939ba911e53ec895cb0e122ddba1fd590","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-appendix-b-to-part-1037","next":"us/40-cfr-appendix-d-to-part-1037"},"notice":"GroundRules: Original legal text. Not legal advice."}