R.C.S.A. § 14-164i-2
Smoke opacity inspection standards
Cite as Conn. Agencies Regs. § 14-164i-2
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.