What is true about an ignition interlock device?
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It measures the alcohol content of the breath of the driver.
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If ordered by a judge as a condition of probation pertaining to some alcohol-related offenses, it must be purchased and installed at the expense of the motorist.
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A vehicle with an installed ignition interlock device cannot be started until the driver provides an acceptable sample breath.
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All of the above.
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Explanation
An ignition interlock device (IID) is a car breathalyzer that judges may order to be installed for drivers convicted of driving under the influence. This device requires drivers to take a breath test before starting their vehicle and allows them to drive only if their BAC level is within an acceptable range.
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Other questions in the same category: Alcohol and Drug Effects on Driving
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This question appears in the following DMV practice tests: