23 C.F.R. § 1275.5
(a) Notwithstanding § 1275.4(a)(3), a State that otherwise meets the requirements of § 1275.4 may comply with 23 U.S.C. 164 and this part based on the State's “general practice” for incarceration. A State electing this option shall—
(1) If the State law does not comply with the requirements of § 1275.4(a)(3)(i), submit the following certification signed by the Governor's Representative for Highway Safety:
I, [Name], Governor's Representative for Highway Safety, certify that, in [State name], at least 75 percent of repeat intoxicated drivers receive a mandatory sentence of imprisonment for a second offense, as those terms are defined in 23 CFR 1275.3. This certification is based on data from the period of twelve consecutive months of the calendar year immediately preceding the date of this certification. I sign this certification based on personal knowledge and other appropriate inquiry. [Signature of Governor's Representative for Highway Safety] [Date of signature]
(2) If the State law does not comply with the requirements of § 1275.4(a)(3)(ii), submit the following certification signed by the Governor's Representative for Highway Safety:
I, [Name], Governor's Representative for Highway Safety, certify that, in [State name], at least 75 percent of repeat intoxicated drivers receive a mandatory sentence of not less than ten days (240 hours) of imprisonment for a third or subsequent offense, as those terms are defined in 23 CFR 1275.3. This certification is based on data from the period of twelve consecutive months of the calendar year immediately preceding the date of this certification. I sign this certification based on personal knowledge and other appropriate inquiry. [Signature of Governor's Representative for Highway Safety] [Date of signature]