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Massachusetts law and regulations
Massachusetts Zero tolerance for drunk driving
In the state of
With the installation of an ignition interlock device, the
offender's license is reinstated with a Z restriction. The Z
restriction stands for Massachusetts Zero tolerance for drunk
driving and notifies law enforcement officials that individuals with
this restriction may only operate a vehicle with an Ignition
Interlock Device installed. Regulations were created to establish
guidelines and procedures for the certification, installation, use
and maintenance of Ignition Interlock Devices. Additionally, the
regulations list program violations and the applicable sanctions.
Thousands of Interlock Devices have been installed since the
program's beginning. There are currently six Ignition Interlock
companies that install and maintain IID devices throughout the
Commonwealth.

For more information about ignition interlocks please email us at info@statewideinterlock.com
or visit our contact us link at the top of this page.
Breath Easy with the best IDD on the market!
