12.9.20: SAFETY NETS
ISA approved safety nets are mandatory on all vehicles and must cover the complete open area of the cockpit on both sides of the vehicle to the extent that it is impossible for any limb or body part of any occupant to protrude from the vehicle at any time when the occupant is properly seated and strapped in their normal driving / riding position.
12.9.21: Nets must be installed on the inside of the roll cage to prevent them from being damaged or coming off in a roll over or slide on the side.
12.9.22: Nets attached to doorframes are permitted when doorframe is equipped with a latch that prevents it from opening and locked permanently closed.
12.9.23: Nets must be installed so that the occupants can release the netting unassisted and exit the vehicle regardless of the position of the vehicle.
12.9.24: The net border or edge and the net attachment must be made of materials that are as strong as, or stronger than, the net itself. Net attachments must be at a minimum of every 6 inches. Acceptable attachments include, but are not limited to: steel hose clamps, snaps, lift-a-dot, metal hooks, and steel rods. Nets must be tight so that when subject to a pushing force of approximately 50lbs the net deflects no more than four inches.