In the Track Event safety rules (Section V, heading 1)

The following language concerning roll bar padding in Time Trials Safety Level 2 was inadvertently omitted and is being included in the Track Event Rules in 1.2.1.B for required aftermarket roll bars for convertibles when required. (E.g., when there is no factory rollover protection.)

1. Braces and portions of the main hoop subject to contact by the driver’s or passenger’s helmet, as seated normally and restrained by seatbelt and harness, must be padded with a non-resilient material such as Ethafoam® or Ensolite® or other similar material with a minimum thickness of 1/2 inch. Padding meeting SFI spec 45.1 or FIA 8857-2001 is strongly recommended.

In addition the allowance for Time Trials Safety Level 2 Roll Bars was inadvertently omitted from the Track Event Convertible Rules, and is also being included in this clarification.

1.2.1.C. The vehicle is equipped with a roll bar that meets the Time Trials Safety Level 2 standards for material and construction found at