Regulations of Connecticut State Agencies (Last Updated: June 14,2023) |
Title14 Motor Vehicles. Use of the Highway by Vehicles. Gasoline |
SubTitle14-164i-1_14-164i-11. Diesel-Powered Commercial Motor Vehicle Emissions Standards |
Sec.14-164i-2. Smoke opacity inspection standards
Latest version.
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The smoke opacity inspection standards for diesel-powered commercial motor vehicles, as established by the Department of Environmental Protection, are as follows:
(1) For model years 1991 and newer, the level of peak smoke opacity shall not exceed forty (40) percent; and
(2) For model years 1990 and older, the level of peak smoke opacity shall not exceed fifty-five (55) percent.
(Effective September 28, 1998; Amended December 29, 2006)