{
  "name": "US Tier 3 fully phased-in exhaust standards for light-duty vehicles (40 CFR 86.1811-17)",
  "description": "Fully phased-in Tier 3 exhaust emission standards from Table 1 of 40 CFR 86.1811-17, compiled with the basis for each value (fleet average or per-test limit) and the useful-life periods from 40 CFR 86.1805-17.",
  "page": "https://casrai.org/guides/emission-standards",
  "publisher": "CASRAI",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "dateModified": "2026-11-12T20:41:51Z",
  "temporalCoverage": "2017/2026",
  "spatialCoverage": "United States",
  "columns": [
    {
      "name": "Pollutant and test",
      "unit": "",
      "description": ""
    },
    {
      "name": "Limit",
      "unit": "g/mile",
      "description": ""
    },
    {
      "name": "Basis",
      "unit": "",
      "description": ""
    },
    {
      "name": "Useful life",
      "unit": "",
      "description": ""
    }
  ],
  "rows": [
    {
      "Pollutant and test": "NMOG+NOx, FTP",
      "Limit": 0.03,
      "Basis": "Fleet average",
      "Useful life": "10 yr/120,000 mi (LDV, LDT1); 15 yr/150,000 mi (LDT2, HLDT, MDPV, HDV)"
    },
    {
      "Pollutant and test": "NMOG+NOx, FTP, LDV and LDT1 certified to 120,000 mi",
      "Limit": 0.026,
      "Basis": "Fleet average (table footnote)",
      "Useful life": "10 yr/120,000 mi"
    },
    {
      "Pollutant and test": "NMOG+NOx, SFTP",
      "Limit": 0.05,
      "Basis": "Supplemental FTP standard",
      "Useful life": "As for criteria pollutants by class"
    },
    {
      "Pollutant and test": "PM, FTP",
      "Limit": 0.003,
      "Basis": "FTP limit",
      "Useful life": "As for criteria pollutants by class"
    },
    {
      "Pollutant and test": "PM, US06 (SFTP)",
      "Limit": 0.006,
      "Basis": "US06 limit",
      "Useful life": "As for criteria pollutants by class"
    },
    {
      "Pollutant and test": "CO, FTP",
      "Limit": 4.2,
      "Basis": "FTP limit",
      "Useful life": "As for criteria pollutants by class"
    },
    {
      "Pollutant and test": "Formaldehyde",
      "Limit": 0.004,
      "Basis": "Table 1 exhaust standard",
      "Useful life": "As for criteria pollutants by class"
    }
  ],
  "sources": [
    {
      "title": "40 CFR 86.1811-17",
      "url": "https://www.law.cornell.edu/cfr/text/40/86.1811-17",
      "accessed": "2026-11-12"
    },
    {
      "title": "40 CFR 86.1805-17",
      "url": "https://www.law.cornell.edu/cfr/text/40/86.1805-17",
      "accessed": "2026-11-12"
    }
  ]
}