Oregon Train Horn Laws 2026 — ORS 815.225 Explained

Status

Legal

Vehicle Code

ORS §815.225

Last reviewed: April 22, 2026

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

Quick facts

Legal status: Legal; Install permitted
Statute: ORS §815.225; Chapter 815
Audibility required: 200 ft; Factory horn minimum
Specific dB cap: None; "Unreasonably loud" test
Penalty class: Class C; Traffic violation
Siren ban?: Yes; Emergency exempt

Are train horns legal in Oregon?

Installing an aftermarket train horn on a private vehicle in Oregon is not prohibited. Oregon train horn law sits in ORS §815.225 — “Violation of use limits on sound equipment.” Oregon requires every motor vehicle to have a horn audible at 200 feet; prohibits using a horn “otherwise than as a reasonable warning”; and prohibits “any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device.” Penalty: Class C traffic violation.

Install is legal; use on Oregon public roads — Portland, Eugene, Salem, Gresham, Hillsboro, Beaverton, Bend — is the regulated behavior.

What ORS §815.225 actually says

§ Statutory excerpt

A person commits the offense of violating the use limits on sound equipment if the person uses a horn or other warning device upon a vehicle otherwise than as a reasonable warning or in a manner that makes any unnecessary or unreasonably loud or harsh sound.

— ORS §815.225 — Violation of use limits on sound equipment Oregon Legislature · Oregon Revised Statutes →

Operative rules: 200-ft audibility requirement (in companion statutes); no use except “reasonable warning”; no “unnecessary or unreasonably loud or harsh sound.” Class C traffic violation penalty.

Does the factory horn need to stay working in Oregon?

Yes. Oregon vehicle equipment statutes require the vehicle to carry a working horn.

Is a train horn a prohibited device under ORS §815.225?

How ORS §815.225 reads horn use

⚠

Prohibited

Use limits

·Use otherwise than as reasonable warning
·Unnecessary or unreasonably loud sound
·Harsh sound
·Class C violation penalty

♪

Train horn install

Not banned

·Multi-trumpet chord not enumerated in ban
·Install itself legal
·Use subject to ORS §815.225 tests
·Factory horn must remain functional

Portable and battery-powered train horns in Oregon

ORS §815.225 regulates “a horn or other warning device” — power source agnostic. M18, DeWalt 20V, Ryobi, Makita portables fall under the same rules.

Enforcement in practice

Oregon is moderately enforcing. Portland Metro (Multnomah, Washington, Clackamas counties) active; rural eastern Oregon rarely cites.

Scenario · What happens if you're stopped for a train horn in Oregon

Step

Initial contact

OSP or local officer observes use / receives complaint

Install alone rarely triggers stops.

Step

Primary question

Was the horn used 'otherwise than as reasonable warning'? 'Unnecessary or unreasonably loud'?

ORS §815.225 tests.

Step

Factory horn check

Is OEM horn installed and working?

Equipment violation if disconnected.

Step

Outcome

Class C traffic violation · fine

Civil-fine class C violation.

Practical Oregon train horn compliance

If you install a train horn in Oregon

6 steps

01

Keep factory horn wired and functional

Vehicle equipment requirement.
02

Put the train horn on a separate switch

Distinct from OEM button.
03

Don't use in Portland Metro traffic

Active enforcement + municipal noise codes.
04

Reserve use for off-road / events / private property

Oregon has substantial forest, desert, and coastal private-land use.
05

Watch Portland / Eugene ordinances

Municipal noise rules layer on state.
06

Hearing protection when testing

140+ dB causes immediate damage.

How to verify this page

Verify on Oregon Legislature ORS Chapter 815. Send a correction.

Screenshot of the official statute page at oregonlegislature.gov — Oregon Legislature — ORS Chapter 815 (official portal) · oregonlegislature.gov captured April 22, 2026

Nearby states & related laws

All 50 states →

WA Legal

Washington

RCW 46.37.380

Washington train horn law (RCW 46.37.380): vehicle horn rules, Seattle / Tacoma / Spokane enforcement, aftermarket horn regulations. Plain-English guide.

CA Restricted

California

CVC §27000–27003

California Vehicle Code and CHP rulings on aftermarket train horns. Decibel limits, mounting rules, and how CA enforces horn laws at the roadside. Updated April 2026.

ID Legal