Convertible Rules
All Convertibles are required to have either OEM/Factory Roll Protection or
approved aftermarket roll protection that is 1” higher than the driver's helmet
while seated in a normal seating position.

A simple Height Test involves taking a broom stick and level attached to the broom stick and laying the broom stick on top of the vehicle's "Roll Over Protection" while level and seeing that you are an inch below the broom stick while in a normal driving position with your helmet on.

Details on Roll Over Protection:
Double and Single Roll Hoops, Factory POWER Hard Tops, "A" Pillar Roll Over Protection and Factory Rollover Protection Systems (Pop-Up Roll Bars) are all approved as long as they are "factory documented rollover protection" and  are above the height requirements. (see above)

Factory Rollover Protection Deployable System:
Hidden deployable rollover bars behind the front seats that deploy automatically if sensors detect an impending rollover.
Note: Many Porsche & BMW & other convertibles have these (pop-up roll bars). If you question yours please use the internet or contact a factory representative to check on factory documented information on your convertible if you are unsure.

Factory Rollover Protection:
The standard factory rollover protection is a roll bar or hoops stationary and placed behind the front seats.  Also note, many cars are known to have factory "A pillar" (front windshield frame) roll over protection: Corvette C6, BMW Z3 & Z4, and Honda S2000 there may be more use the internet to check on factory documented information on your convertible if you are unsure.

* It is the driver's responsibility to provide this proof with factory documented rollover protection.

Aftermarket roll bars are required to be able to at a minimum sustain the
vehicles weight and are above the height requirements. (driver's helmet) 

* It is the driver's responsibility to provide documented proof that the aftermarket rollover protection (roll bars) does meet the requirements stated above.

Notes:
"A" Pillar is the front windshield frame. Cars that are know to have factory
"A pillar" (front windshield frame) roll over protection: Corvette C6, BMW
Z3 & Z4, and Honda S2000 there may be more look at manufacture information
to see.

SCCA & NASA approved roll bars are all acceptable.

Height Test may be re-checked at the track and if you and your car DO NOT
pass this test you will forfeit your registration fee and not be able to run
the event.

Convertibles Passengers: need to be 1” or more under the approved roll bar.

Find out more information on new U.S. laws pertaining to convertibles:
http://www.autosafety.org/safety-loophole-ragtops-escape-roof-crush-rules

If you are unsure whether your convertible meets the safety requirements, please contact us before signing up. 817 571-1101.

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