According to The Crime Report, nearly 350,000 people in the United States have interlocks, according to the latest estimate in an annual industry report, up from 133,000 a decade earlier. Thirty-four states — including, this month, New Jersey — require people with drunken-driving convictions to install the devices. Other states are considering similar laws and two United States senators are pushing legislation that would require all new cars to include a version of the technology by 2024. The National Highway Traffic Safety Administration said it had not studied the issue of distracted driving and interlocks. States that mandate them have not, either.
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