DOT Emergency Equipment Requirements (2026 Guide)

What emergency equipment does DOT require on a commercial vehicle?

Short answer: As of 2026, 49 CFR 393.95 requires two things on every truck, truck tractor and bus: a fire extinguisher (UL 10 B:C or more if placarded for hazardous materials, otherwise 5 B:C or two rated 4 B:C each), and warning devices — three bidirectional emergency reflective triangles, or at least six fusees. The spare-fuse requirement was removed effective 20 April 2026, and liquid-burning flares ceased to be an accepted warning device on 23 March 2026. A first aid kit was never on the list.

Published August 27, 2026

Roadside inspections are won and lost on small, cheap items. A driver can have a perfect logbook, sound brakes and current medical certification, and still be placed out of service or fined over an extinguisher whose gauge has drifted into the red. This guide sets out the DOT emergency equipment requirements exactly as 393.95 reads today — the section was amended twice in 2026, both times by deletion — then covers the part that actually saves lives: where the warning devices go once the vehicle is stopped, which is governed by a different section entirely.

Written for fleet managers, owner-operators, safety directors and anyone assembling or auditing a truck's equipment kit.

Why this matters.
The equipment in 393.95 costs less than a tank of fuel and is the difference between a stopped truck being seen and being struck. Warning-device violations are among the easiest citations an inspector can write, because compliance is binary and visible from outside the cab — and the underlying hazard is one of the most lethal in trucking. A disabled vehicle on a shoulder at night is a stationary object in a lane of traffic moving at highway speed. There is a second, quieter risk in 2026: a fleet still inspecting against a 2025 equipment list is auditing an item the regulation no longer contains, and its written policy cites a paragraph now marked [Reserved].

What 393.95 requires today

The section applies to each truck, truck tractor and bus, with an exception for vehicles towed in driveaway-towaway operations.

What changed in 2026, and why your checklist may be stale

FMCSA amended 393.95 twice in 2026, publishing both rules on 19 February 2026 as part of a wider deregulatory package. Both removed requirements rather than adding them, which is why a fleet that has not revisited its equipment policy since 2025 is now over-inspecting.

The spare-fuse deletion is the more consequential of the two in day-to-day terms. FMCSA's own reasoning was that modern vehicles have largely moved to circuit breakers and sealed electrical architecture, leaving a requirement that generated on the order of 9,000 roadside violations a year without a corresponding safety return. Two practical points follow. Spare fuses are not prohibited — a fleet that finds them useful should keep carrying them. And an inspector cannot cite their absence, so a pre-trip checklist that still fails a vehicle for a missing fuse is applying a stricter rule than the government does.

The flare change is largely housekeeping: liquid-burning flares had long since disappeared from practical use. It matters mainly because older driver handbooks still list them as an option, and a driver who relies on that list is carrying something that no longer satisfies paragraph (f).

The extinguisher spec, read carefully

Most extinguisher violations are not about the rating. They are about the four conditions that travel with it, each of which an inspector can check in seconds without opening a door:

• It must be labelled or marked by the manufacturer with its UL rating. A rating you cannot read is a rating you cannot prove. Sun-bleached labels are a common and entirely avoidable failure.
• It must permit visual determination of whether it is fully charged. In practice this means a working gauge, and it is the single most-cited condition — gauges drift, and nobody notices until an inspector points at one.
• It must be filled and located so that it is readily accessible for use. An extinguisher buried under load straps behind the passenger seat is not accessible.
• It must be securely mounted to prevent sliding, rolling or vertical movement. A loose extinguisher in a cab is both a violation and a projectile in a hard stop.

Two practical notes. The B:C classification matters because vehicle fires are overwhelmingly flammable-liquid and electrical fires — fuel, hydraulic oil, wiring. And the two-extinguisher option at 4 B:C each is genuinely useful on a tractor-trailer where one unit can live in the cab and one in an accessible external box. If you are unfamiliar with extinguisher class letters and the monthly check that keeps a gauge honest, see our fire extinguisher inspection guide.

Warning devices: what counts, and what does not

The regulation names two acceptable sets, and it is worth being precise because the market sells a great deal of equipment that does not satisfy either.

There is a further restriction worth knowing: flame-producing devices such as fusees must not be used around vehicles carrying flammable cargo. A tanker driver who only carries fusees has a compliance problem and a safety problem at the same time.

Placement is where drivers actually fail — and it is a different rule

393.95 says what to carry. 49 CFR 392.22 says what to do with it, and that is the section a post-crash investigation will read. The sequence:

1. Activate the hazard warning flashers immediately on stopping on the travelled portion or the shoulder for any reason other than a necessary traffic stop. Keep them flashing until the warning devices are in place.
2. Place the devices as soon as possible, and in any event within 10 minutes. The ten-minute clock is explicit in the regulation and is the number an investigator will ask about first.
3. On a two-lane road, use the 10 / 100 / 100 pattern. One device on the traffic side, about 10 feet (four paces) from the vehicle. One about 100 feet (forty paces) behind, in the direction of approaching traffic. One about 100 feet ahead.
4. On a divided or one-way highway, shift everything rearward. One device within 10 feet of the rear on the traffic side, one about 100 feet back and one about 200 feet back, all toward approaching traffic. There is no forward device, because there is no oncoming traffic to warn.
5. If stopped within 500 feet of a curve, the crest of a hill or any other obstruction to view, move the far device out. Place it 100 to 500 feet from the vehicle in the direction of the obstruction, far enough that traffic clearing the obstruction still has room to react.
6. Know the district exception. Placement is not required within the business or residential district of a municipality, except when lighted lamps are required and street lighting is insufficient to make the vehicle clearly discernible at 500 feet.

The pattern exists because a triangle at the vehicle warns nobody — by the time a driver sees it, they are already at the hazard. The 100-foot and 200-foot devices are the ones doing the work.

What 393.95 does not require

Being precise about the boundary is what makes the rest of the guide trustworthy.

• A first aid kit is not listed in 393.95. Many fleets require one by policy, some shippers require one by contract, and a vehicle-specific kit is a sensible thing to carry — but it is not one of the three federal emergency-equipment items. Options are grouped in our best vehicle first aid kits guide and the vehicle first aid kits collection. For the workplace-side rules that do impose kit duties, see OSHA first aid kit requirements.
• Wheel chocks are not in 393.95 either — but they become mandatory the moment the trailer is at a dock being loaded by a forklift, under OSHA rather than DOT. That crossover is covered below.
• Spill kits, high-visibility vests and gloves are not federal emergency equipment under this section, though a driver who steps out onto a shoulder without hi-vis is taking a risk the regulation does not price.

Where DOT hands off to OSHA: the loading dock

A truck stops being a vehicle and starts being a workplace when it backs into a dock. At that point OSHA's powered industrial truck standard applies, and it is unambiguous. Under 29 CFR 1910.178(k)(1), "the brakes of highway trucks shall be set and wheel chocks placed under the rear wheels to prevent the trucks from rolling while they are boarded with powered industrial trucks." 1910.178(m)(7) adds that brakes shall be set and wheel blocks in place to prevent movement of trucks, trailers or railroad cars during loading or unloading, and notes that fixed jacks may be necessary to support a semitrailer that is not coupled to a tractor.

Trailer creep — the incremental walking of a trailer away from the dock under repeated forklift loading — is the hazard those sentences exist to prevent, and the consequence is a forklift falling into the gap. Chock selection is its own decision; see wheel chock selection guide.

Worked example: a pre-trip equipment check that takes four minutes

• Extinguisher. Gauge in the green; UL rating legible on the label; bracket tight; nothing stacked in front of it. Confirm the rating actually matches the load — if you are running placarded hazmat today and the unit is a 5 B:C, the truck is not compliant for this trip even though it was compliant yesterday.
• Warning devices. Open the case and count to three. Triangles crack, get borrowed and get left at the roadside after a previous stop, and a case that rattles convincingly can still be short one.
• Fuses — delete this line from your checklist. The requirement was removed on 20 April 2026. If your pre-trip form still fails a vehicle for a missing spare fuse, it is enforcing a rule that no longer exists. Keep carrying them if you find them useful; just stop auditing against them.
• Flashers. Test them. They are the first thing that has to work in the sequence above.
• The non-required half. First aid kit in date, hi-vis vest reachable from the driver's seat rather than buried in the sleeper, torch with live batteries. None of it is 393.95, all of it is what you will want on a shoulder at 2 a.m.

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Frequently asked questions about DOT emergency equipment

What emergency equipment is required on a commercial motor vehicle?

As of 2026, two items: a fire extinguisher of the specified rating, and warning devices for stopped vehicles — either three bidirectional emergency reflective triangles conforming to FMVSS No. 125, or at least six fusees. The spare-fuse requirement that previously formed a third item was removed effective 20 April 2026 and paragraph (b) is now [Reserved]. Paragraph (k) also specifies red flags of not less than 12 inches square where they are used.

What size fire extinguisher does DOT require?

A power unit transporting hazardous materials in a quantity requiring placards needs a UL rating of 10 B:C or more. Any other power unit needs either one extinguisher rated 5 B:C or more, or two extinguishers each rated 4 B:C or more.

Does the extinguisher have to be mounted?

Yes. It must be securely mounted to prevent sliding, rolling or vertical movement, filled and located so it is readily accessible for use, labelled or marked by the manufacturer with its UL rating, and designed so a visual check shows whether it is fully charged.

How many warning triangles does DOT require?

Three. They must be bidirectional emergency reflective triangles conforming to Federal Motor Vehicle Safety Standard No. 125 at 49 CFR 571.125. The alternative is at least six fusees.

Are LED road flares DOT approved?

LED flares are not named as a compliant substitute in 393.95, which specifies FMVSS 125 triangles or fusees. They are valuable supplementary conspicuity, particularly in wind and rain, but they should be carried in addition to a compliant set rather than in place of one.

How far do you place warning triangles?

On a two-lane road: one on the traffic side about 10 feet from the vehicle, one about 100 feet behind toward approaching traffic, and one about 100 feet ahead. On a divided or one-way highway: within 10 feet of the rear on the traffic side, then about 100 feet and about 200 feet toward approaching traffic.

How long do you have to put out warning devices?

As soon as possible, and in any event within 10 minutes of stopping. Hazard warning flashers must be activated immediately on stopping and kept flashing until the devices are placed.

What if you are stopped near a hill or curve?

If the vehicle is stopped within 500 feet of a curve, the crest of a hill or another obstruction to view, the device in that direction must be placed 100 to 500 feet from the vehicle, far enough to give traffic clearing the obstruction adequate warning.

Do you need warning devices in a city?

Placement is not required within the business or residential district of a municipality, except during the time lighted lamps are required and when street or highway lighting is insufficient to make the vehicle clearly discernible at 500 feet.

Does DOT require a first aid kit in a commercial vehicle?

A first aid kit is not among the items listed in 49 CFR 393.95. Many carriers require one by company policy and some shippers require one by contract, and carrying a vehicle-specific kit is sound practice — but it is not one of the three federal emergency-equipment items.

Are wheel chocks required by DOT?

They are not listed in 393.95. They become mandatory under OSHA once the vehicle is at a dock: 29 CFR 1910.178(k)(1) requires brakes set and wheel chocks placed under the rear wheels of highway trucks being boarded by powered industrial trucks, and 1910.178(m)(7) requires brakes set and wheel blocks in place during loading or unloading.

Are spare fuses still required by DOT?

No. FMCSA removed the spare-fuse requirement from 49 CFR 393.95 effective 20 April 2026 (91 FR 7877), and paragraph (b) is now [Reserved]. The agency noted the requirement was generating roughly 9,000 roadside violations a year on vehicles that have largely moved to circuit breakers. Carrying spare fuses is still permitted and often sensible; it is simply no longer citable.

Are liquid-burning flares still an accepted warning device?

No. FMCSA removed liquid-burning flares from the warning-device options at 393.95(f)(2), (g) and (j), and from the 392.22 placement rules, effective 23 March 2026 (91 FR 7874). Paragraph (f) now lists exactly two acceptable sets: three FMVSS No. 125 triangles, or at least six fusees.

Which vehicles are exempt from 393.95?

The section applies to each truck, truck tractor and bus, with an exception for vehicles towed in driveaway-towaway operations.

Can fusees be used around a tanker?

No. Flame-producing devices must not be used around vehicles carrying flammable cargo. A driver hauling flammables should be carrying triangles, which is one practical reason triangles are the near-universal fleet choice.

Does a pickup truck used for work need this equipment?

393.95 applies to commercial motor vehicles as defined in the Federal Motor Carrier Safety Regulations — principally by weight rating, hazardous-materials placarding or passenger capacity. A light pickup used for work is often outside that definition, but the determination is made against the CMV definition rather than by vehicle type, and carriers should confirm it for their own fleet.

How often should the emergency equipment be checked?

Every pre-trip. Extinguisher gauges drift, triangles get left behind after a roadside stop, and fusees are consumed. The equipment is only useful in the condition it is in on the day it is needed.

Further reading on this site

• Wheel chock selection guide — the dock-side requirement DOT does not impose and OSHA does.
• Best vehicle first aid kits — the kit 393.95 does not require but most fleets carry.
• OSHA first aid kit requirements — the workplace-side rules and the ANSI Z308.1 classes.
• Fire extinguisher inspection guide — the monthly check that keeps a gauge honest.
• Vehicle first aid kits — car and truck emergency kits by contents and case type.
• Fire extinguishers — ABC and B:C-rated units by size and rating.
• OSHA emergency action plan requirements — the facility-side planning discipline for the yard the truck returns to.