Data from MADD State Law Overview (2022)
| State | Summary Paragraph | Affordability Program | Compliance Based Removal | Ignition Interlock on Refusals | Grade | Stops at >.08 *From 2006–2020 |
|---|---|---|---|---|---|---|
| Alabama | Alabama’s interlock law is all-offender and makes users prove compliance with the order before exiting the program. However, the law makes most drunk drivers wait before being able to install an interlock and allows those ordered on the device to avoid it by waiting out their time on an ignition interlock. | YES | YES | YES | D+ 69.5/100 | 8,404 |
| Alaska | In 2008, Alaska enacted an all-offender ignition interlock law. The state also requires these devices for refusals. The state must make many improvements to the current law to ensure more drunk drivers use these devices and to close loopholes. | YES | NO | YES | F 50/100 | 18,036 |
| Arizona | In 2007, Arizona enacted an all-offender ignition interlock law that is one the most effective laws in the Nation. The state can still improve their law by closing loopholes, specifically by allowing for the use of interlocks following revocation of a license. | NO | YES | YES | A- 90.5/100 | 120,782 |
| Arkansas | Arkansas has an effective all-offender ignition interlock law as it requires all drunk drivers to use the device before obtaining an unrestricted license. The law could be made even better by closing loopholes. | NO | NO | YES | B+ 87/100 | 112,531 |
| California | California’s repeat offender law is a model for other states, but the state fails to utilize these lifesaving devices for first-time offenders. MADD CIIM? calls on the state to enact an all-offender interlock law like most of the country. | YES | YES | NO | F 13/100 | 298,401 |
| Colorado | Colorado’s interlock law is effective in stopping drunk driving, but loopholes remain that limit the reach of these devices. Closing these loopholes would ensure that more drunk drivers utilize an interlock. | YES | YES | YES | D 64/100 | 135,963 |
| Connecticut | Connecticut’s all-offender is well-rounded as it requires all drunk drivers to use the device before being relicensed. Small loopholes exist that if closed would make the law even more effective. | NO | YES | YES | B 85/100 | 93,164 |
| Delaware | Delaware all-offender law contains loopholes that limits the reach of these devices. | YES | YES | YES | D+ 69.75/100 | 7,870 |
| District of Columbia (Washington, DC) | The Nation’s Capital’s all-offender law results in few interlock installations due loopholes and lack of implementation of the law. Closing law loopholes will ensure better use of these lifesaving devices. | YES | YES | NO | D 67/100 | 299 |
| Florida | Florida must take steps to ensure more drunk drivers utilize an ignition interlock. Enacting an all-offender interlock law will go a long way to stop drunk driving. | NO | YES | NO | F 19/100 | 109,127 |
| Georgia | For over two decades, repeat offenders are required to use an interlock in Georgia. The state can make great improvements to the law by enacting an all-offender interlock law. | NO | NO | NO | F 5.5/100 | 44,313 |
| Hawaii | Hawaii’s all-offender law allows any drunk driver to wait out the interlock order. If the person uses interlock, they do not need to prove compliance. The state can close a big loophole by ensuring all drunk drivers use an interlock before being legally relicensed. | YES | NO | YES | D- 63/100 | 11,595 |
| Idaho | Idaho’s all-offender law contains many loopholes. The state could get more interlocks installed if they closed loopholes, which allows drunk drivers to avoid an interlock. | YES | NO | YES | F 55/100 | 10,595 |
| Illinois | Illinois’ all-offender law allows drunk drivers to wait out their device order and loopholes remain which undermines the effectiveness of the current law. | YES | YES | YES | C- 73/100 | 129,893 |
| Indiana | Indiana needs to enact an all-offender law to ensure more drunk drivers use an interlock. The current law gives Judges too much discretion not to order an interlock. | YES | YES | YES | F 29/100 | 15,079 |
| Iowa | Interlocks in Iowa prevent many drunk driving attempts. These devices could be more effective if lawmakers enacted improvements to close loopholes in the law. A big improvement needed is enacting a compliance-based removal aspect to the law. | NO | NO | YES | D- 61/100 | 184,148 |
| Kansas | Kansas has an effective all-offender interlock law because drunk drivers must use an interlock before obtaining an unrestricted license. However, there is no compliance-based removal law and certain drunk drivers must wait before installing an interlock. | YES | YES | YES | C 75/100 | 123,647 |
| Kentucky | Kentucky’s all-offender law lacks a key component, requiring all drunk drivers to use the device before being fully relicensed. | YES | YES | YES | C 74/100 | 8,980 |
| Louisiana | Louisiana enacted an all-offender interlock law in 2007. The state has failed to make any meaningful improvements to the law. As a result, many loopholes exist which minimizes the effectiveness of the law. | NO | NO | YES | F 55/100 | 135,090 |
| Maine | The all-offender ignition interlock law in Maine fails to utilize best practices that make an effective law. | YES | NO | NO | F 47/100 | 17,503 |
| Maryland | Maryland’s all-offender law contains the biggest loophole in the United States. Nearly all first-time convicted drunk drivers avoid an ignition interlock through diversion (Probation Before Judgement). | YES | YES | YES | C+ 79.75/100 | 73,978 |
| Massachusetts | In 2020, Massachusetts became the 50th state to allow for the use of interlocks for first-time offenders. The law lacks any requirement of interlocks for first-time drunk drivers and contains many loopholes. | YES | YES | NO | F 11/100 | 47,435 |
| Michigan | Michigan is one of 16 states without an all-offender ignition interlock law. The state has not made any improvements to the interlock law in over a decade. | YES | YES | NO | F 11/100 | 32,223 |
| Minnesota | Minnesota continues to make improvements on their ignition interlock law. Two big improvements needed is an all-offender law and eliminating the ability for drunk drivers to wait out using an interlock. | NO | F 24/100 | 88,050 | ||
| Mississippi | Mississippi’s all-offender law needs an upgrade. The state could improve the law by requiring all drunk drivers to use an interlock before obtaining an unrestricted license. | YES | YES | YES | C 74/100 | 9,485 |
| Missouri | Loopholes exist in Missouri’s all-offender law as drunk drivers can wait out the ignition interlock order or utilize diversion to avoid a drunk driving conviction. | YES | YES | NO | D+ 67/100 | 128,196 |
| Montana | Montana utilizes ignition interlocks for repeat offenders but fails to require these devices for all drunk drivers. The state has a long way to go to ensure more drunk drivers utilize these lifesaving devices. | NO | NO | NO | F 0/100 | 7,054 |
| Nebraska | Nebraska has not made an improvement to the ignition interlock law since 2011. As a result, loopholes exist which allow drunk drivers to fall through the cracks and avoid an ignition interlock. | YES | NO | YES | F 49.5/100 | 43,241 |
| Nevada | Nevada’s law biggest loophole is the ability for first-time offenders to avoid an interlock by waiting out the license suspension. All drunk drivers should use an interlock for at least six months before obtaining an unrestricted license. | YES | YES | YES | C 74/100 | 16,503 |
| New Hampshire | New Hampshire’s all-offender law contains loopholes that minimizes the effectiveness of the law. Allowing drunk drivers to use an interlock upon revocation and to require these devices before obtaining unrestricted driving privileges will improve the law. | YES | YES | NO | F 56/100 | 14,529 |
| New Jersey | New Jersey’s new 2019 all-offender interlock law is an improvement that will save lives. More lives would be saved if the state closes loopholes to ensure more interlocks are utilized for all drunk drivers. | YES | YES | YES | D 66.5/100 | 119,122 |
| New Mexico | In 2005, New Mexico became the first state to enact an all-offender law. The state would improve their law by closing loopholes to ensure more drunk drivers utilize an interlock. | YES | YES | NO | A- 90/100 | 89,658 |
| New York | New York’s all-offender interlock law contains too many loopholes which all drunk drivers use to avoid the device. Lawmakers should take action to improve the interlock law to help stop drunk driving. | YES | YES | NO | D+ 69/100 | 111,043 |
| North Carolina | North Carolina is one of 16 states without an all-offender interlock law. The state should continue to take steps to improve the interlock law. | NO | NO | YES | F 15/100 | 30,306 |
| North Dakota | North Dakota should utilize all tools in the toolbox to fight drunk driving. The state should boost ignition interlocks use for all drunk drivers to help prevent drunk driving. | NO | NO | NO | F 0/100 | 715 |
| Ohio | Ohio gives judges too much discretion and the use of ignition interlocks is an afterthought in sentencing drunk drivers. The state should enact an all-offender law and make the use of interlocks mandatory for all drunk drivers. | YES | YES | NO | F 11/100 | 34,927 |
| Oklahoma | Oklahoma’s all-offender law needs an improvement to ensure more drunk drivers utilize an interlock. The law does include measures that ensure more drunk drivers use an interlock by requiring these devices for diversion agreements, but more action is needed to eliminate loopholes. | NO | NO | YES | F 53/100 | 104,009 |
| Oregon | Oregon’s all-offender law needs an improvement as drunk drivers must wait before using the device and other loopholes undermines the effectiveness of the interlocks to fight drunk driving. | YES | YES | NO | F 59/100 | 57,645 |
| Pennsylvania | Pennsylvania is one if 16 states without an all-offender law. Although interlocks are required for some first-time offenders, most drunk drivers avoid an interlock by entering diversion (ARD). Closing loopholes will ensure more interlocks are installed and lives saved. | NO | YES | YES | F 31.5/100 | 93,037 |
| Rhode Island | Rhode Island’s all-offender law contains loopholes which minimizes the reach of interlocks for all drunk drivers. The state should close loopholes to ensure more drunk drivers utilize an interlock. | NO | YES | YES | D 64.5/100 | 7,848 |
| South Carolina | South Carolina is one of 16 states without an all-offender interlock law. Enacting an all-offender law will boost interlock use and help prevent drunk driving. | YES | YES | NO | F 21/100 | 12,655 |
| South Dakota | South Dakota uses interlocks as part of the 24/7 program. The state should enact an all-offender interlock law so more drunk drivers use an interlock. | NO | NO | NO | F 0/100 | 2,040 |
| Tennessee | Drunk drivers can avoid an interlock by waiting out the license suspension. Tennessee could improve implementation of their all-offender interlock law by closing this loophole. | YES | NO | NO | D+ 69/100 | 79,530 |
| Texas | The interlock law in Texas is largely implemented by courts and probation departments on a county level. The state should add a statewide implementation of the interlock law. | YES | YES | NO | C- 70/100 | 371,345 |
| Utah | Utah’s all-offender law contains loopholes which minimize how many interlocks are installed. | NO | NO | YES | F 50/100 | 26,472 |
| Vermont | Vermont’s all-offender law contains a big loophole—drunk drivers can wait out their license suspension and avoid an installing an interlock. | YES | YES | YES | C 75/100 | 11,700 |
| Virginia | Virginia’s all-offender interlock law contains loopholes which minimize the effectiveness of their law. All drunk drivers should utilize an interlock before obtaining an unrestricted driver’s license. | YES | YES | YES | C 75/100 | 28,952 |
| Washington | Washington’s all-offender law contains many important pieces to ensure implementation of interlocks for drunk drivers. However, the state’s could improve their law by ensuring all drunk drivers use an interlock before obtaining an unrestricted driver’s license. | YES | YES | YES | C+ 77/100 | 147,435 |
| West Virginia | West Virginia’s all-offender interlock law received a major setback in 2020 when lawmakers weakened the law. The law contains loopholes which give judges too much discretion and allows drunk drivers to avoid installing an interlock by waiting out a license suspension. | YES | YES | YES | C 74/100 | 31,052 |
| Wisconsin | Wisconsin is one of 16 states without an all-offender law. The state has not improved their interlock law since 2009 and as a result many loopholes exist which hinders the reach of interlocks to stop drunk driving. | YES | NO | YES | F 34/100 | 357,946 |
| Wyoming | Wyoming is one of 16 states without an all-offender interlock law. The state should take steps to ensure more drunk drivers utilize an interlock. | YES | NO | YES | F 18/100 | 20,831 |