How Can A Previous DWI Arrest Affect My New DWI Charge?
To calculate how any prior DWI arrests and convictions you might have can affect your current DWI arrest, it is imperative to understand how the “look back” period works. The look back period is so named because it refers to the period of time that a prior DWI offense stays on a motorist’s driving record and criminal history. If a motorist commits an additional DWI offense while the look back period is still in effect, then their prior conviction can be utilized by a prosecutor to enhance the criminal penalties meted out if the defendant is convicted. For example, in New Hampshire, a motorist who commits a second DWI offense while their look back period is in effect will be required to have an ignition interlock device installed in their vehicle for a minimum of one year in order to have their driver’s license reinstated.
Look back laws vary from one state to the next. The shortest look back periods are only five years. The longest look back periods last a lifetime (such as in MA). The average look back period is 10 years. In the state of New Hampshire, the look back period is 10 years.
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