Driver's License Test Prep

Florida BAC Limits & DUI Consequences

Blood-alcohol legal limits for adults, minors, and commercial drivers; refusal-to-test penalties; first-offense consequences.

Implied consent / refusal consequences

Consent is not something you sign for, it is something you give by driving. Under Florida law, anyone who accepts the privilege of operating a motor vehicle in this state is, by operating it, deemed to have consented to testing on the lawful request of an officer with reasonable cause to believe you were driving under the influence. That reaches a learner's license holder and a visitor licensed in another state, not only Florida license holders. Refuse a breath or urine test and you lose your license for a year, and since October 1, 2025 you also commit a second-degree misdemeanor on that first refusal; a second or subsequent refusal brings an 18-month suspension and a first-degree misdemeanor. The refusal offense is written around breath and urine, but blood is not a free pass: refusing a lawful blood test after you have already lost your license for a previous refusal is also a misdemeanor. Blood testing itself has its own triggers. It applies where a breath or urine test is impractical or impossible, and in DUI cases involving death or serious bodily injury blood may be drawn with or without your consent, including while you are unconscious, by a doctor, nurse or other health professional.

Source: s. 316.1932(1)(a)1.a., Florida Statutes: a person "who accepts the privilege extended by the laws of this state of operating a motor vehicle within this state is, by operating such vehicle, deemed to have given his or her consent". The criminal refusal penalty is s. 316.1939(1), which is written for "a chemical or physical test of his or her breath or urine, as described in s. 316.1932", and was amended by HB 687 (ch. 2025-121) effective October 1, 2025 to make a first refusal a second-degree misdemeanor and a second or subsequent one a first-degree misdemeanor. Blood testing sits under s. 316.1932(1)(c) and s. 316.1933. The suspension lengths are unchanged and appear in the Florida Driver License Handbook (rev. 08/2023), Chapter 3, p. 25, which predates the 2025 change and frames consent as given by signing the license. Blood refusal is not outside the criminal provisions: s. 316.1932(1)(c) warns a capable person that refusing a lawful blood test, after a previous refusal has already suspended the driving privilege, is a misdemeanor. Serious-injury and death blood draws are s. 316.1933. Verified Aug 2026

DUI first-offense consequences

A first DUI conviction in Florida carries a fine of $500 to $1,000 (raised to $1,000 to $2,000 when the BAL was .15 or higher or a minor was in the vehicle), 50 hours of community service, up to one year of probation, and up to six months of imprisonment (up to nine months with the aggravating factors). The license is revoked for a minimum of 180 days. You must complete 12 hours of DUI School and undergo an evaluation to determine whether treatment for addiction is needed. An ignition interlock device is available at the court's order on a first conviction and is mandatory for at least six continuous months when the BAL was .15 or higher or a minor was in the vehicle. After a DUI conviction Florida also requires higher liability limits ($100,000 bodily injury per person, $300,000 per accident, and $50,000 property damage) for three years, and a DUI stays on your driving record for 75 years. One consequence the handbook leaves out: on a first conviction the court must also order your vehicle impounded or immobilized for 10 days as a condition of probation. It applies to the vehicle you were driving or any one vehicle registered in your name, and the 10 days do not run at the same time as any jail term.

Source: Florida Driver License Handbook (rev. 08/2023), Chapter 3: Your Driving Privilege, p. 26 (Penalties for DUI); Chapter 4 (Drinking & Driving), p. 35 The impoundment is s. 316.193(6)(a), Florida Statutes: the court "must also, as a condition of probation, order the impoundment or immobilization of the vehicle that was operated by or in the actual control of the defendant or any one vehicle registered in the defendant’s name ... for a period of 10 days". The handbook’s first-conviction list at p. 25 omits it. Verified Aug 2026

Ignition interlock required

Florida does not require an ignition interlock on every DUI. On a first conviction the court may order one, and it becomes mandatory for at least six continuous months when the breath or blood alcohol level was .15 or higher or a minor was in the vehicle. A second conviction carries at least one continuous year, but at least two continuous years if that second offense also involved a level of .15 or higher or a minor in the vehicle. A third carries at least two continuous years. The device goes on every vehicle you own or lease and routinely drive, at your expense, and it will not let the engine start until it reads a clean breath sample.

Source: Florida Driver License Handbook (rev. 08/2023), Chapter 3, pp. 25-26 (Penalties for DUI) for the per-tier terms. The enhanced case is s. 316.193(4)(c), Florida Statutes, which orders the device "upon all vehicles that are individually or jointly leased or owned and routinely operated by the convicted person for not less than 6 continuous months for the first offense and for not less than 2 continuous years for a second offense" where the .15-or-higher or minor-in-vehicle provision applies. The ordinary second-conviction year is s. 316.193(2). Verified Aug 2026

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