Driver's License Test Prep
Florida Practice DUI & Impaired Driving

For a second DUI conviction in Florida, what is the minimum required period for an ignition interlock device?

  1. A.
    At least one continuous year. Correct
  2. B.
    Only when a judge specifically orders one.
  3. C.
    Six continuous months.
  4. D.
    At least two continuous years.
The Why

The answer is "At least one continuous year."

The manual sets the second-DUI ignition interlock at one continuous year. Choice C reaches for the six-month figure the manual attaches to a first DUI only when the BAL is .15 or higher or a minor was in the vehicle, then imports it as if it were the second-conviction baseline.

Why the others miss

The traps in the wrong answers

B. Only when a judge specifically orders one.

The interlock is mandatory on a second conviction, not discretionary. This answer carries the 'if court ordered' phrasing from the first-DUI block into the second-DUI block, where the requirement is now automatic.

C. Six continuous months.

Six months is the interlock period the manual lists for a first DUI only when a minor was in the vehicle or the BAL was .15 or higher, not the second-conviction minimum. This answer pulls the enhanced first-offense figure forward and treats it as the baseline for the second conviction.

D. At least two continuous years.

Two continuous years is the interlock minimum the manual lists for a third DUI conviction, one row below the second on the same penalty table. This answer slides one row down the penalty table and reads the third-offense figure as the second-offense one.

The Rule

This question tests your knowledge of DUI & Impaired Driving in Florida. Source: Florida Driver Manual, "PENALTIES FOR DUI: Second DUI Offense/Conviction," p.26..

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