Last reviewed April 22, 2026
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State Law · Tennessee (TN)

Tennessee Train Horn Laws 2026 — T.C.A. §55-9-201 Explained

Tennessee train horn law (T.C.A. §55-9-201): vehicle horn rules, Nashville / Memphis enforcement, aftermarket horn regulations. Plain-English guide.

By Train Horn Hub editors Published April 22, 2026 Updated April 22, 2026
Status
Legal
Vehicle Code
T.C.A. §55-9-201
Last reviewed: April 22, 2026

Disclaimer. This page summarizes publicly available Tennessee statutes as of April 2026. Not legal advice. Verify and consult a licensed TN attorney.

Quick facts
Legal status
Legal
Install permitted
Statute
§55-9-201
T.C.A. Title 55 Ch. 9
Audibility required
200 ft
Factory horn minimum
Specific dB cap
None
"Unreasonably loud" test
Siren/whistle/bell ban
Yes
Emergency exempt
Penalty
Class C misd.
Fine up to $50

Installing an aftermarket train horn on a private vehicle in Tennessee is not prohibited. TN train horn law is in T.C.A. §55-9-201 — “Horns and warning signals.” Standard UVC pattern: 200-ft audibility, “unreasonably loud or harsh sound” ban, use limited to safe-operation cases, and sirens/whistles/bells barred on non-emergency vehicles. Equipment-violation penalty class.

Install is legal; use on TN public roads — Nashville, Memphis, Knoxville, Chattanooga, Clarksville, Murfreesboro — is the regulated behavior.

What T.C.A. §55-9-201 actually says

§ Statutory excerpt

Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred feet (200′), but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to insure safe operation, give audible warning with the horn but shall not otherwise use the horn when upon a highway.

— T.C.A. §55-9-201 — Horns and warning signals Tennessee Code Annotated · LexisNexis (official) →

Operative rules: 200-ft audibility · no unreasonably loud or harsh sound · no whistle · safe-operation use limit · §55-9-202 siren/whistle/bell ban.

Does the factory horn need to stay working in TN?

Yes. §55-9-201 applies to the vehicle as a whole.

Is a train horn a “whistle” under §55-9-201?

How §55-9-201 reads warning devices
∿
Prohibited
Siren · whistle · bell
  • ·Siren — variable-pitch tone
  • ·Whistle — single-tone pressure device
  • ·Bell — fire / warning bell
  • ·Unreasonably loud or harsh language
♪
Train horn (chord)
Not enumerated
  • ·Multi-note chord, not a whistle tone
  • ·Install not banned
  • ·Use subject to "unreasonably loud" test
  • ·Factory horn must remain functional

Portable and battery-powered train horns in TN

§55-9-201 regulates “a horn or other warning device” — power source agnostic. M18, DeWalt 20V, Ryobi, Makita portables fall under the same rules.

Enforcement in practice

Tennessee is broadly permissive. Nashville, Memphis, Knoxville see complaint-driven enforcement; rural Appalachian counties and West TN rarely cite.

Scenario · What happens if you're stopped for a train horn in TN
Step
01
Initial contact
THP or local officer observes misuse / receives complaint
Install alone rarely triggers stops.
Step
02
Primary question
Did horn emit 'unreasonably loud or harsh' or a whistle?
§55-9-201 tests.
Step
03
Factory horn check
Is OEM horn working at 200 ft?
Equipment violation if disconnected.
Step
04
Outcome
Class C misdemeanor · fine up to $50
TN equipment offenses default to Class C.

Practical TN train horn compliance

If you install a train horn in TN
6 steps
  1. 01
    Keep factory horn wired and functional

    200-ft rule applies to the vehicle.

  2. 02
    Put the train horn on a separate switch

    Distinct from OEM button.

  3. 03
    Use factory horn for ordinary signaling

    Safe-operation limit per §55-9-201.

  4. 04
    Reserve use for off-road / events / private property

    TN has substantial rural and mountain land.

  5. 05
    Watch Nashville / Memphis ordinances

    Municipal noise codes layer on state law.

  6. 06
    Hearing protection when testing

    140+ dB causes immediate damage.

How to verify this page

Verify on the Tennessee Code Annotated (LexisNexis official publisher). Send a correction if needed.

Primary Source · Page Capture
Screenshot of the official statute page at lexisnexis.com
Visit source
Tennessee Code (official publisher — LexisNexis TCA) · lexisnexis.com captured April 22, 2026

Nearby states & related laws

All 50 states →
KY Legal

Kentucky

KRS 189.080

Kentucky train horn law (KRS 189.080): vehicle horn requirements, Louisville / Lexington enforcement, aftermarket horn regulations. Plain-English guide.
VA Legal

Virginia

Va. Code §46.2-1060

Virginia train horn law (Va. Code §46.2-1060): vehicle horn rules, Virginia Beach / Richmond enforcement, aftermarket horn regulations. Plain-English guide.
NC Legal

North Carolina

N.C.G.S. §20-125

North Carolina train horn law (N.C.G.S. §20-125): vehicle horn rules, Charlotte / Raleigh enforcement, aftermarket horn regulations. Plain-English guide.
GA Legal

Georgia

O.C.G.A. §40-8-70

Georgia O.C.G.A. §40-8-70 covers vehicle horns. Install is not prohibited; unreasonably loud or whistle use is citable. Plain-English statute summary.

Sources & Citations

Educational content. Not legal advice. Verify current statutes with your state DMV or a licensed attorney before installation.