New Jersey Traffic Statute Guide
N.J.S.A. 39:4-91, explained.
The right-of-way duty under 39:4-91 depends on the emergency vehicle's use, an audible warning, and, except for police vehicles, a qualifying forward-facing red light.
The Rule
The siren-and-light predicates matter
A highway driver must yield to an authorized emergency vehicle operating on official business or in the specified professional, emergency-response, or pursuit circumstances when an audible bell, siren, exhaust whistle, or other signal sounds. A non-police emergency vehicle must also display a red lamp visible from at least 500 feet under normal atmospheric conditions.
Emergency drivers retain a duty of due regard and receive no protection for reckless disregard. Section 39:4-91 establishes right of way; 39:4-92 describes how an approaching motorist pulls right and stops.
What Must Be Proved
The charge is narrower than its label
- An authorized emergency vehicle was engaged in a statutorily covered response or pursuit.
- The required audible signal sounded and any required red lamp was displayed.
- The accused driver failed to yield on the highway.
MVC points: 2; the MVC table lists 39:4-91 through 39:4-92 together. The precise citation still controls which conduct must be proved.
Fine note: This section does not state its own dollar amount. This guide therefore does not present an old Violations Bureau payable amount as the current fine.
Evidence & Defenses
Details decide these cases
Warning activation
Emergency-vehicle logs, dashcam, body camera, CAD timestamps, and light/siren data can establish when warnings began.
Visibility and audibility
Buildings, traffic, weather, vehicle insulation, direction of approach, and distance affect notice, while the statutory signals remain predicates.
Opportunity to yield
Surrounding lanes, intersections, stopped traffic, and the emergency vehicle's path show what yielding safely required.
Request the emergency vehicle's records, not only the citing unit's report. Activation timing can be seconds away from the alleged failure.
Common Questions
Questions about 39:4-91
Does an emergency vehicle always have right of way?
Not under this section without the covered operation and required audible signal; non-police vehicles also need the described red lamp.
Must a police car display the red lamp?
The statute expressly excepts police vehicles from that equipment condition, though it still requires the audible signal and covered use.
Can an emergency driver be careless?
The section preserves the duty to drive with due regard and does not protect reckless disregard for safety.
Primary Sources
Read the official material
The explanation above was checked on September 5, 2026 against the New Jersey Legislature's official bulk text (codified through P.L.2025, c.405), the Legislature's live Title 39 compilation, and the MVC's current points table. The 2026 enacted-law index was also checked for later amendments affecting this batch.
- Official Legislature lookup for N.J.S.A. 39:4-91
- Local Title 39 reference entry for N.J.S.A. 39:4-91
- New Jersey Legislature official statute-text archive
- New Jersey MVC official points schedule
Related reading: New Jersey traffic-ticket defense and the New Jersey municipal court directory.
Charged under N.J.S.A. 39:4-91?
The citation is only the start. The location, observations, video, and exact subsection determine what the State can prove.
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Source verification completed September 5, 2026 against the New Jersey Legislature bulk statutes through P.L.2025, c.405, the exact Title 39 section, and the New Jersey MVC points schedule. Primary sources: Legislature statute archive and MVC points schedule. This is source verification, not a representation of attorney review. Laws change; nothing here is legal advice for your specific case.