After a DUI conviction in California, most people face a choice they were not prepared for: accept a restricted license that limits where you can drive, or install an ignition interlock device and drive anywhere you want. It sounds simple. It is not. The decision affects how long your total suspension lasts, what you can and cannot do behind the wheel, and how much the whole process costs. This is one of the most commonly misunderstood topics for people going through a DUI, so here is a plain-language breakdown of how it actually works.
Two Suspensions, Not One
Before getting into the choice itself, it helps to understand that a California DUI produces two separate license suspensions running on parallel tracks.
The first is the DMV’s Administrative Per Se suspension, which kicks in automatically after your arrest regardless of what happens in criminal court. For a first offense where you submitted to a chemical test, this is a four-month suspension. The second is the court-triggered suspension that follows a conviction, which is typically six months for a first offense.
Both suspensions carry their own requirements for getting your license back. Both can be addressed with restricted driving options. And critically, the choices you make on one side affect how the other side plays out.
The Restricted License: What It Is and What It Costs You
The traditional restricted license, sometimes called the work/program restriction, allows you to drive only to and from work, during work if your job requires it, and to and from your court-ordered DUI program. That is it. Anywhere else is off limits.
To get this restriction after a first offense, you must first sit through a 30-day hard suspension during which you cannot drive at all, for any reason. After those 30 days, you can apply for the restricted license. From that point, the restriction lasts for five months, bringing the total APS suspension period to five months plus the initial 30 days.
The restricted license requires you to file an SR-22 certificate of insurance with the DMV, enroll in your DUI program, and pay a reissue fee. It does not require an IID.
The catch that most people do not anticipate is the driving limitation itself. To and from work sounds manageable until you realize it means grocery runs, picking up your kids, going to a doctor appointment, or stopping anywhere on the way home is technically a violation. Living under that restriction for months is genuinely difficult for most people, and violating it carries serious consequences including a new criminal charge for driving on a suspended license.
The IID Restriction: What It Is and What It Costs You
The IID restriction is the alternative. Instead of limiting where you can drive, it limits what you drive. Any vehicle you operate must be equipped with a functioning ignition interlock device, which requires a clean breath sample before the engine starts and periodic rolling retests while the car is in motion.
The major advantage is that you can drive anywhere, at any time, as long as you are in an IID-equipped vehicle. There are no geographic or purpose restrictions. You can go to the grocery store, drive your kids to school, visit family, or run errands. For most people with normal lives and normal responsibilities, this is meaningfully better than the work-only restriction.
The other significant advantage is timing. For first-time offenders who did not refuse the chemical test, choosing the IID restriction allows you to bypass the 30-day hard suspension entirely in many cases. You can apply for the IID-restricted license as soon as the IID is installed, the SR-22 is filed, and you are enrolled in your DUI program. That means you may lose little or no driving time at all while your APS suspension is pending.
The cost is real, though. IID installation typically runs between $70 and $150 depending on the vendor, and monthly monitoring fees average $60 to $100. Over a four to six month period, you are looking at several hundred dollars in IID costs on top of everything else.
How the Two Suspensions Interact
Here is where people get genuinely confused, and where the stakes of the choice become clearer.
If you win your DMV hearing and the APS suspension is set aside, you may still face a court-triggered suspension when you are convicted. If you lose the DMV hearing or do not request one, the APS suspension runs its course. Ideally, a good attorney times things so that the APS suspension and the court suspension overlap as much as possible rather than running back to back. That overlap is one of the concrete advantages of having private representation from the beginning, as discussed in Public Defender vs. Private Attorney.
When the court orders an IID as part of your conviction, any time you have already spent driving on an IID-restricted license under the APS suspension may count toward your court-ordered IID period, depending on timing. This credit does not happen automatically. It requires coordination between your attorney and the DMV, and it requires the IID to have been installed before the court conviction.
What the Court May Order Regardless
One thing that catches people off guard: the court can order an IID independently of what you chose on the DMV side. If the judge orders an IID as a condition of probation, you are getting one whether you wanted it or not. In that case, having already installed one voluntarily under the APS restriction not only kept you driving during the suspension period but also gives you a head start on the court’s requirement.
For repeat offenders, the IID is generally mandatory rather than optional. A second DUI within ten years requires an IID for at least one year. A third offense requires two years. In those situations the choice between restricted license and IID largely disappears.
Drug-Only DUIs Are Treated Differently
If your DUI involved drugs only and no alcohol, the IID restriction is generally not available to you. The IID is an alcohol-specific device and California law does not extend IID-restricted driving privileges to drug-only DUI convictions under Vehicle Code § 23152(f). In that situation the work/program restricted license may be your only option for getting behind the wheel during a suspension.
If your case involved a combination of alcohol and drugs, the IID restriction is available.
The Practical Question: Which Is Right for You?
For most first-time offenders who submitted to a chemical test, the IID restriction is the better choice for one straightforward reason: it lets you drive everywhere immediately, without sitting through a 30-day hard suspension first. The cost of the device is real but manageable, and the freedom to drive without geographic restriction is worth it for most people with jobs, families, and normal daily responsibilities.
The work-only restriction makes more sense in limited situations:
- Your job genuinely requires you to drive to only one location and back, making the restriction easy to comply with
- You have someone else who can handle personal driving needs during the restriction period
- You are strongly opposed to the cost and inconvenience of the IID for any reason
Whatever you decide, do not make this choice without talking to your attorney first. The timing of your DMV hearing, your conviction, and your IID installation all interact in ways that can either minimize or extend your total time with restricted driving privileges. Getting the sequencing right matters.
Citations
- California Vehicle Code § 13353.2 (APS suspension for first offense).
- California Vehicle Code § 13353.6 (IID restriction in lieu of suspension).
- California Vehicle Code § 13353.7 (work/program restricted license).
- California Vehicle Code § 13352 (court-triggered suspension and IID requirements).
- California Vehicle Code § 23152(f) (DUI drugs).
- California Vehicle Code § 14601.2 (driving on suspended license).