Vehicle Noise: Allen vs McKinney
How do vehicle noise rules compare between Allen, TX and McKinney, TX?
Allen and McKinney have similar restriction levels.
Allen, TX
Collin County
Allen prohibits modified exhaust, loud stereos, and engine revving under Chapter 6 and TX Transportation Code Sec. 547.605. Muffler bypass and cutout systems are illegal statewide on public roads.
View full Allen rules →McKinney, TX
Collin County
Modified exhausts, loud stereos, and engine revving are prohibited under McKinney Code Chapter 62 and Texas Transportation Code 547.604 (muffler requirement). Sound audible beyond 30 feet from a vehicle is prima facie evidence of violation.
View full McKinney rules →Key Facts Comparison
| Fact | Allen | McKinney |
|---|---|---|
| State Law | TX Transp. Code 547.605 | - |
| Muffler Required | Yes | - |
| Stereo Audible | 30 ft violation | - |
| Engine Rev | Prohibited residential | - |
| Fine | Up to $200 | Up to $500 |
| Audible Distance | - | 30 ft rule |
| Muffler | - | Required TX 547.604 |
| Stereo | - | No plainly audible past 30 ft |
Highlighted rows indicate differences between cities.
Allen FAQ
Is a straight-pipe exhaust legal in Allen?
No. Texas Transportation Code Sec. 547.605 prohibits muffler cutouts and bypasses on public roads statewide.
How loud can my car stereo be in Allen?
It cannot be plainly audible more than 30 feet from the vehicle under Allen Chapter 6. Officers cite based on plain-audibility standard, not dB meter.
Who enforces vehicle noise in Allen?
Allen Police. Code Compliance handles stationary/residential noise; moving-vehicle violations fall to patrol officers.
McKinney FAQ
Who enforces vehicle noise in McKinney?
McKinney Police Department traffic units and Code Compliance handle complaints. Non-emergency dispatch: (972) 547-2700; general city line (972) 547-7500.
Is my aftermarket exhaust legal?
Only if it maintains or reduces factory sound levels. TX Transportation Code 547.605 prohibits any modification that increases noise above manufacturer specifications, even if it passes state inspection.
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