Limits for Other Vehicles
27206. For the purposes of Section 27200, the following noise limits shall apply to any other motor vehicle, not specified in this article, manufactured:
(1) After 1967, and before 1973 ...........................................................86 dba
(2) After 1972, and before 1975 ...........................................................84 dba
(3) After 1974 ...........................................................................................80 dba
Amended and renumbered Ch. 558, Stats. 1977. Effective January 1, 1978.
Noise Limits
38370. (a) The Department of Motor Vehicles shall not identify any new off-highway motor vehicle, which is subject to identification and which produces a maximum noise level that exceeds the following noise limit, at a distance of 50 feet from the centerline of travel, under test procedures established by the Department of the California Highway Patrol.
(1) Any such vehicle manufactured before January 1, 1973..........................................................92 dBA
(2) Any such vehicle manufactured on or after January 1, 1973, and before January 1, 1975...........88 dBA
(3) Any such vehicle manufactured on or after January 1, 1975, and before January 1, 1986...........86 dBA
(4) Any such vehicle manufactured on or after January 1, 1986....................................................82 dBA
The average noise level in Times Square is 90 dBA. Almost all custom mufflers do not meet the standard.