Section 1956.6 - Exhaust Emission Standards and Test Procedures-1980 Model Heavy-Duty Engines and Vehicles(a) The exhaust emissions from new 1980 model heavy-duty engines and vehicles, except engines used in medium-duty vehicles, shall not exceed: Exhaust Emission Standards (grams per brake horsepower hour) |
Model Year | Hydrocarbons | Carbon Monoxide | Hydrocarbons plus Oxides of Nitrogen |
| 1980 | 1.0 | 25 | 6.0 |
| OR* | -- | 25 | 5 |
| __________ |
* The two sets of standards are alternatives. A manufacturer has the option for each engine family of showing compliance with either set. Separate deterioration factors shall be established, where applicable, for HC, CO, NOx, and/or the combined emissions of HC and NOx.
(b) The test procedures for determining compliance with these standards are set forth in the "California Exhaust Emission Standards and Test Procedures for 1980 Model Heavy-Duty Engines and Vehicles," adopted May 24, 1978.(c) A manufacturer may elect to certify heavy-duty vehicles of less than 10,000 pounds maximum gross vehicle weight rating as medium-duty vehicles under Section 1960.0 of this chapter, in which event heavy-duty emission standards and test procedures shall not apply.(d) This regulation shall remain in effect until December 31, 1990, and as of that date is repealed unless a later regulation deletes or extends that date. Notwithstanding the repeal or expiration of this regulation on December 31, 1980, the provisions of the regulation as they existed prior to such repeal or expiration shall continue to be operative and effective for those events occurring prior to the repeal or expiration.Cal. Code Regs. Tit. 13, § 1956.6
Note: Authority cited: Sections 39600 and 39601, Health and Safety Code. Reference: Sections 39002, 39003, 43000, 43013, 43100, 43101 and 43104, Health and Safety Code.