So-called “ignition interlock” devices will have to be installed in all vehicles belonging to New Jersey motorists convicted of driving while intoxicated, even on first offense, under a new law which went into effect on Dec. 1.

But whilethe new law expands the ignition lock requirement to include all first-time offenders, it eliminates license suspensions for first-timers whose blood-alcohol level was only slightly above the legal limit, or between .08 and .10 percent.