It is a filing—not a standalone policy
The filing is submitted by an eligible insurance carrier in connection with qualifying financial-responsibility coverage. The phrase “SR-22 insurance” is common shorthand, but the SR-22 itself is evidence filed with the state.
Why it may be required
An Ohio BMV or court order may follow certain insurance non-compliance, point, judgment, OVI, or other suspension circumstances. Only the responsible authority can confirm your requirement.
What the filing does
It allows the carrier to certify qualifying proof and report cancellation as required. It does not guarantee license reinstatement, carrier acceptance, price, or processing time.