Independent Assessment of Interior Material Flammability Under FMVSS 302 (2012)
FMVSS 302 (Federal Motor Vehicle Safety Standard No. 302) establishes burn resistance requirements for materials used within the occupant compartments of motor vehicles. Rather than evaluating structural fire endurance, the standard focuses specifically on flame propagation across interior surfaces when exposed to a small ignition source.
The test method defined within the regulation measures the horizontal burn rate of a material following controlled flame application. Materials must either demonstrate a burn rate not exceeding 102 mm per minute, or self-extinguish within defined distance and time limits. The standard applies to interior components located within 13 mm of the occupant compartment air space, including trim panels, seat materials, headlining and other energy-absorbing surfaces.
Fire Cloak™ EV fire blankets have been independently tested in accordance with FMVSS 302. The results confirm that, under the prescribed horizontal burn conditions, the material did not transmit a flame front and achieved a recorded burn rate of 0 mm per minute. This independently generated data provides assurance of the blanket’s resistance to flame spread in applications where controlled interior fire performance is essential.
Alignment with FMVSS 302 Flammability Requirements
FMVSS 302 is concerned specifically with limiting the rate at which flame can travel across materials located within the vehicle occupant compartment. Unlike large-scale fire resistance testing, this regulation evaluates behaviour under controlled exposure to a small ignition source, reflecting realistic interior ignition scenarios such as a dropped match or smouldering cigarette.
Compliance is determined through a horizontal burn test in which a specimen is exposed to a calibrated flame for a fixed duration. The progression of the flame front is then measured between defined reference points. The regulation also sets out how single materials and bonded composites are to be assessed, ensuring that layered constructions are tested in a manner representative of their installed condition.
Fire Cloak™ EV fire blankets were tested in accordance with this methodology, including specimen preparation, conditioning and orientation requirements. The results demonstrate that the material does not support sustained horizontal flame spread under the prescribed test conditions. This outcome confirms alignment with the flammability controls defined within FMVSS 302 and supports its suitability for applications where controlled interior fire behaviour is required.
FMVSS 302 Test Report
Fire Cloak™ EV fire blankets are supported by independent flammability test reports conducted in accordance with FMVSS No. 302 – Flammability of Interior Materials. These reports document the horizontal burn performance of the tested specimens under the controlled ignition conditions defined within the regulation.
Testing was carried out using the prescribed cabinet configuration, specimen dimensions, conditioning environment and burner characteristics specified within the standard. Multiple specimens were assessed to determine worst-case orientation, with flame progression monitored between the defined measurement points used to calculate burn rate.
The reports include detailed identification of the product tested, composite construction, thickness and mass per unit area, specimen preparation methodology, test date and the specific clauses of FMVSS 302 referenced during the procedure. Recorded results confirm that the material did not transmit a flame front under test conditions, achieving a burn rate of 0 mm per minute.
For transparency and technical verification, the complete FMVSS 302 test report for Fire Cloak™ is available below.
Fire Cloak™ EV Fire Limitation Blanket (8 x 6m)
Test Results
| Specimen No | Time to First Measuring Point (seconds) | Time to Final Measuring Point (seconds) | Burning Time T (seconds) | Distance Burnt D (mm) | Burning Rate (mm/min) |
|---|---|---|---|---|---|
| 1 | Did not reach | Did not reach | 1 | Not applicable | 0 |
| 2 | Did not reach | Did not reach | 2 | Not applicable | 0 |
| 3 | Did not reach | Did not reach | 1 | Not applicable | 0 |
| 4 | Did not reach | Did not reach | 1 | Not applicable | 0 |
| 5 | Did not reach | Did not reach | 1 | Not applicable | 0 |
| 6 | Did not reach | Did not reach | 1 | Not applicable | 0 |
What This Means in Practice
Independent testing to FMVSS 302 provides clear, objective evidence of how Fire Cloak™ behaves when exposed to a controlled ignition source representative of vehicle interior fire risks. The standard is specifically designed to limit flame propagation within occupant compartments, making it a recognised benchmark for automotive material performance.
By meeting these flammability criteria, Fire Cloak™ demonstrates controlled surface behaviour under regulated laboratory conditions. This independently verified performance data supports informed decision-making across sectors where vehicle fire containment, operational safety and material reliability are critical considerations.
Below is a sector-specific view of how this translates into real-world operational value.
Certified Proof & Next Steps
Fire Cloak™ performance under FMVSS No. 302 is supported by formal flammability test reports issued by an independent accredited fire-testing laboratory. Each assessment documents specimen configuration, conditioning environment, orientation and flame application in accordance with the procedures defined within the regulation.
Testing was carried out using the prescribed horizontal burn methodology, including controlled cabinet conditions and calibrated ignition source. The reports record specimen construction, thickness, mass per unit area and measured flame progression, together with calculated burn rate data and supporting photographic evidence, ensuring full technical traceability.
The recorded results confirm that the material did not transmit a flame front under the defined test conditions. This provides a clear, independently verified basis for referencing FMVSS 302 compliance within operational documentation, procurement specifications and insurer or stakeholder discussions where automotive flammability performance is relevant.
The complete FMVSS 302 flammability test report is available for download below.
About FMVSS 302 – Flammability of Interior Materials
This section provides a practical overview of how FMVSS No. 302 defines flammability requirements for materials used within motor vehicle occupant compartments.
