Article C12.4.2
Secondary Roll Structure (Halo)
Technical Regulations
Article C12.4.2
Secondary Roll Structure (Halo)
Chapter: C12
In Simple Terms
The Halo (the protective structure around the driver's head) must be mounted symmetrically on the car with its front attachment point at a specific location and its rear mounting surfaces at a slightly higher position. This ensures the safety device is properly positioned to protect the driver in case of an accident.
- The Halo must be positioned symmetrically about the car's centerline
- Front mounting axis must be at XC=-975 and Z=660 coordinates
- Rear mounting surfaces must align on the Z=695 plane
- The Halo is separate from the main Survival Cell but works together for driver protection
Official FIA Text
The Secondary Roll Structure, which is not considered part of the Survival Cell, must be positioned symmetrically about the car centre plane with its front fixing axis at XC= −975 and Z=660. The mounting faces for the rearward fixings must lie on the plane Z=695.
halosecondary roll structuredriver safetymounting positionsurvival cell
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