Folsom vs Isleton
How do vehicle noise rules compare between Folsom, CA and Isleton, CA?
Folsom and Isleton have similar restriction levels.
Folsom, CA
Sacramento County
Modified exhaust, loud mufflers, and excessive acceleration on Folsom streets violate CA Vehicle Code §27150-27151 (muffler requirement) and §23130 (vehicle noise limits). Folsom Police enforce both state vehicle code and Folsom Municipal Code §8.42 for stationary vehicle noise.
View full Folsom rules →Isleton, CA
Sacramento County
Vehicle noise in Isleton is regulated by California Vehicle Code sections 27150 and 27151, which require functioning mufflers and prohibit modified or excessively loud exhaust. CHP and Sacramento County Sheriff enforce on State Route 160 and local streets.
View full Isleton rules →Key Facts Comparison
| Fact | Folsom | Isleton |
|---|---|---|
| Muffler Required | CVC §27150 | - |
| dBA Limit | 80 dBA @ 50 ft (cars) | - |
| Sideshows | CVC §23109 misdemeanor | Misdemeanor |
| Stationary Noise | FMC §8.42 | - |
| Referee | BAR inspection required | - |
| Primary Law | - | CVC 27150 and 27151 |
| Decibel Limit | - | 95 dB SAE J1169 typical |
| Enforcement | - | CHP and Sheriff |
| Key Corridor | - | SR-160 River Road |
Highlighted rows indicate differences between cities.
Folsom FAQ
Is a loud exhaust illegal in Folsom?
Yes if it's louder than factory or exceeds 95 dBA at the tailpipe. Officers can cite under CVC §27150 and require you to pass a BAR referee inspection to clear the citation.
What about motorcycles?
Motorcycles are subject to the same noise limits (80 dBA at 50 ft passing) plus EPA tailpipe stamp requirements. Aftermarket pipes without EPA stamps are citable.
Isleton FAQ
Are Jake brakes banned in Isleton?
Not outright, but drivers should avoid engine-compression braking in residential sections of SR-160 where signs are posted. Unnecessary use can be cited as nuisance noise.
Is a loud aftermarket exhaust illegal?
If it exceeds 95 decibels at the SAE test distance or lacks proper mufflers, yes. CHP can require a referee inspection and proof of compliance.
Compare other topics
See how Folsom and Isleton compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool