What are the structural design differences in roof crush strength between traditional SUVs and modern unibody crossovers that directly influence their rollover survivability ratings?
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SEED QUERY
What are the structural design differences in roof crush strength between traditional SUVs and modern unibody crossovers that directly influence their rollover survivability ratings?
2 real searches · 1 real-search pass
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ChatGPT2 real searches · gpt-6
IIHS roof strength test SUV unibody body-on-frame roof crush structural differences rollover ratings Google ↗
NHTSA roof crush resistance FMVSS 216a strength-to-weight ratio rollover survivability ratings vehicle structure Google ↗
- Evolution of IIHS ratings · iihs-staging.iihs.org
- Roof strength · iihs.org
- 49 CFR § 571.216a - Standard No. 216a; Roof crush resistance; Upgraded standard. | Electronic Code of Federal Regulations (e-CFR) | US Law · law.cornell.edu
- FMVSS No. 216a, “Roof crush resistance; Upgraded standard,” requires that the vehicle roof meet two requirements when subjected to a test force applied by a large steel test plate first to one side of the roof, and then to the other side: the lower surface of the test plate must not move more than 127 millimeters (mm); and the load applied to a headform positioned on a test device in the corresponding front outboard seat must not exceed 222 Newtons. Vehicles with a gross vehicle weight rating (G · public-inspection.federalregister.gov
Queries
2 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
IIHS roof strength test SUV unibody body-on-frame roof crush structural differences rollover ratings OBSERVED | Google ↗ AI Mode ↗ | — | — | — | — | 1x of 1 | |
NHTSA roof crush resistance FMVSS 216a strength-to-weight ratio rollover survivability ratings vehicle structure OBSERVED | Google ↗ AI Mode ↗ | — | — | — | — | 1x of 1 |