The bill that received final votes in both chambers late Wednesday would establish the state's first felony offense of driving under the influence.
It applies to those with a third conviction of driving with at least twice the legal limit of alcohol in their system and for anyone with fourth DUI convictions.
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The legislation also establishes more severe penalties, including longer mandatory jail time, for unintentionally causing the death of another person as a result of a repeat DUI violation.
Officials say there are about 10,000 alcohol-related crashes and 300 fatalities annually in the state, which is considered to have comparatively lenient DUI laws.
Democratic Gov. Tom Wolf plans to sign the bill.
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