{"data":{"id":"us/40-cfr-appendix-i-to-subpart-b-of-part-205","jurisdiction":"us","citation":"40 CFR Appendix I to Subpart B of Part 205","heading":"Appendix I to Subpart B of Part 205","body":"Table I—Sample Size Code Letters\nBatch size Code letter\n4 to 8 A.\n9 to 15 B.\n16 to 25 C.\n26 and larger D.\nTable II—Sampling Plans for Inspecting Batches\nSample size code letter Test sample Test sample size Cumulative test sample size Batch inspection criteria\nAcceptance No. Rejection No.\nA 1st 4 4 0 1\nB 1st 3 3 0 1\nC 1st 3 3 0 2\n2d 3 6 1 2\nD 1st 2 2 (1) 2\n2d 2 4 (1) 2\n3d 2 6 0 2\n4th 2 8 0 3\n5th 2 10 1 3\n6th 2 12 1 3\n7th 2 14 2 3\n1 Batch acceptance not permitted at this sample size.\nTable III—Batch Sequence Plans\nSample size code letter Number of batches Cumulative number of batches Sequence inspection criteria\nAcceptance No. Rejection No.\nA 2 2 1 (2)\n2 4 2 4\n2 6 3 5\n2 8 4 5\nB 2 2 0 (2)\n2 4 1 4\n2 6 2 5\n2 8 3 5\n2 10 4 6\n2 12 5 6\nC 2 2 (1) 2\n2 4 0 2\n2 6 0 3\n2 8 1 3\n2 10 2 4\n2 12 3 4\nD 2 2 0 2\n2 4 1 3\n2 6 2 4\n2 8 3 4\n1 Batch sequence acceptance not permitted for this number of batches.\n2 Batch sequence rejection not permitted for this number of batches.\nTable IV—Recommended Format for Vehicle Noise Data Sheet\nTest Report Number: Manufacturer:\nVEHICLE:\nTrade Name: VIN:\nModel Year: Other Reference No:\nConfiguration Identification: Category Identification:\nTest Site Identification and Location:\nINSTRUMENTATION:\nMicrophone Manufacturer: Model No: Serial No:\nSound Level Manufacturer: Model No: Serial No:\nCalibrator Manufacturer: Model No: Serial No:\nOther and Manufacturer: Model No: Serial No:\nTEST DATA:\nApproach Gear: Date of Test:\nApproach RPM: Temp: Wind:\nAcceleration Test:\nDeceleration Test:\nAcceleration Test\nRun No.\n1 2 3 4 5\ndBA Left\nRight\nHighest RPM attained in End Zone\nCalculated Sound Pressure dBA\nDeceleration Test with Exhaust Brake Applied\ndBA Left\nRight\nCalculated Sound Pressure dBA\nTEST Personnel:\n(Name)\nRecorded By: Date:.........\n(Signature)\nSupervisor: Title:.........\n(Signature)","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER G—NOISE ABATEMENT PROGRAMS","PART 205—TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS","Subpart B—Medium and Heavy Trucks"],"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":"652f43a469306db1a069a102582b3fd8b833f1973c82035604f7542ae4f4445c","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-205.59","next":"us/40-cfr-205.150"},"notice":"GroundRules: Original legal text. Not legal advice."}