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F.5.15.1 If there is a Roll Hoop Brace or other frame tube alongside the driver, at the height of the neck of any of the team’s drivers, a metal tube or piece of sheet metal must be firmly attached to the Frame.
This is intended to prevent the drivers’ shoulders from passing under the Roll Hoop Brace or frame tube, and the driver’s neck contacting this brace or tube.
Explanation
F.5.15.1 If there is a Roll Hoop Brace or other frame tube alongside the driver, at the height of the neck of any of the team’s drivers, a metal tube or piece of sheet metal must be firmly attached to the Frame.
This is intended to prevent the drivers’ shoulders from passing under the Roll Hoop Brace or frame tube, and the driver’s neck contacting this brace or tube.
If there is a Roll Hoop Brace or another frame member next to the driver at neck height, then a metal tube or piece of sheet metal has to be connected to the frame in a way that blocks it from the drivers neck. This is to help prevent the drivers neck from contacting a small surface area (the unprotected tube in question) with potentially high force in the case of a rollover. The unprotected tube next to the driver's neck is a potentially dangerous situation because the tube has the potential to damage the driver's neck or cut off their circulation.
This is our chassis which does not require additional modifications to make the cockpit safe for the drivers neck.
If we had Main Hoop Braces in front of our Main Hoop (blue), we would be required to cover them with additional tubing or sheet metal (pink) to make the cockpit safe for the driver's neck.
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