The NJ Traffic Signal Statute
N.J.S.A. 39:4-81, explained.
Red light tickets, missed signals, and right-on-red disputes in New Jersey are all written under this one short statute. What it actually requires, what a conviction costs, and where these cases get contested — figures verified July 2026.
What the Statute Says
Two rules, one of them widely unknown
Subsection (a) is the familiar part: every driver must obey the instructions of any official traffic control device — signals, but also signs and markings placed under the traffic code — unless a police or traffic officer directs otherwise. "Ran the red light" tickets, missed-arrow tickets, and right-on-red tickets are all charged here.
Subsection (b) is the part most drivers have never heard: when a signal at an intersection is dark because of a power failure or malfunction, the law converts that intersection into a stop intersection under 39:4-144. Stop completely, yield to traffic close enough to be an immediate hazard, then proceed. A driver who did that at a dead signal hasn't violated anything — which makes what the signal was actually displaying a real evidentiary question, not a formality.
Points & Money
What a conviction carries
| Consequence | Amount |
|---|---|
| MVC points | 2 |
| Payable fine (includes court costs) | $86 |
| Payable fine in a Safe Corridor, construction zone or 65-mph area | $141 |
Statewide Violations Bureau payable amounts, verified July 2026; the statute's underlying fine range is $50–$200 (N.J.S.A. 39:4-203).
Two points won't trigger anything by themselves — but points stack. Reach 6 points within three years and the MVC bills its surcharge ($150 a year for three years, plus $25 per point over six); reach 12 and your license is suspended. And insurers read the conviction on your abstract at renewal regardless. The full schedule is on our NJ points list.
The Real Disputes
Where 39:4-81 cases are actually fought
Timing
Entering lawfully on yellow and being caught in the intersection when it turns is not a violation. When you crossed the stop line — and how long the yellow ran — is often the whole case.
Right-on-red facts
Many of these tickets are really about whether the stop before the turn was complete, or whether a NO TURN ON RED sign was visible from the driver's position — far more contestable than a solid red.
The device itself
The statute covers official devices placed under the traffic code, and the dark-signal rule replaces the signal entirely when it malfunctions. What the signal was doing, and whether it was working, are fair questions.
The deeper treatment of these defenses — including how right-on-red cases get contested — is on our failure-to-stop defense page. In most routine cases an attorney can appear for you under Rule 7:12-3, so fighting the ticket usually doesn't mean a day off work.
Common Questions
39:4-81 questions we hear
How many points is running a red light in NJ?
A conviction under 39:4-81 carries 2 MVC points, whether the allegation is a solid red, a missed stop sign-style signal, or a right-on-red dispute. The payable fine is $86 ($141 in a Safe Corridor, construction zone, or 65-mph area) — but the points and the insurance consequences are the real cost, especially if you already have points on your record.
What if the traffic light was broken or dark?
The statute answers this directly: when a signal is dark because of a power failure or malfunction, the intersection is treated as a stop intersection under 39:4-144 — come to a complete stop, then yield to traffic close enough to be a hazard. A driver who did exactly that has not violated 39:4-81, and what the signal was actually doing at the time is a legitimate factual question in these cases.
Is a right turn on red a 39:4-81 ticket?
Usually, yes — the summons cites the same statute either way. Many right-on-red tickets are really disputes about whether the stop before the turn was complete or whether a no-turn-on-red sign was visible, which are more defensible facts than driving through a solid red. Our failure-to-stop page covers how those cases actually get contested.
Can a 39:4-81 ticket be reduced?
Many point tickets resolve as amendments to lesser or no-point violations, such as unsafe driving under 39:4-97.2 — but that is a negotiated outcome that takes the prosecutor’s agreement and the judge’s approval. Nobody is obligated to offer it, and your record and the facts of the stop matter. What you should not do is simply pay a ticket you may have a defense to, because paying is pleading guilty.
Related violations & resources
Failure-to-stop defense
How signal and stop-sign cases get fought, and what we charge.
The practice pageStop & yield signs (39:4-144)
The statute the dark-signal rule borrows — and its exact stop mechanics.
Stop-sign lawImproper turns (39:4-123)
Turn-position tickets — 3 points, often written alongside signal charges.
Turning violationsNJ points list
Every point-carrying violation, by statute.
Look up a violationUnsafe driving (39:4-97.2)
The no-point violation that point tickets are often negotiated down to.
The downgrade offenseNJ municipal courts
Where your ticket gets heard, and how a session runs.
Court guideTicketed under 39:4-81?
Tell us what the signal was doing and how the stop happened. You'll hear the realistic outcomes and our flat fee before you decide whether fighting it makes sense.
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