If your dad is convicted of the new DUI, statutorily there would be a mandatory jail sentence imposed. The length of the sentence would be a function of his BAC level (or refusal to take a test) and his history within the last seven years. The sentencing judge, however, would have the discretion to convert the jail to home detention (house arrest) if there was a showing that jail could cause irreparable damage to his health.
Of possibly more immediate concern is whether the judge, at arraignment, will impose bail on your father as a condition of his continued release. Some courts/judges are especially brutal in this regard when the defendant has multiple prior offenses. Based on how soon his arraignment is approaching, he really should contact a DUI attorney as soon as possible to get assistance in minimizng this possibility.
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