Saturday, May 25, 2024

DUI News Blog

The Latest DUI News and Information From DUI Defense Attorneys Across the Country

Infrastructure Bill and Impaired Driving Detection

State and federal governments have implemented various methods to combat impaired driving in the United States.  One approach was creating DUI per se laws which made it illegal to operate a vehicle with a blood alcohol concentration of .10 or higher.  That ‘per se limit’ was later lowered to .08.  Other methods have included sobriety checkpoints, saturation patrols, and public relations campaigns.  The newest strategy, included in the federal 2021 Infrastructure Bill, is to install impaired driving detection systems in new vehicles.

What Does the Infrastructure Bill Require?
The Infrastructure Bill directs the federal government and auto manufacturers to research systems which will “passively monitor the performance of a driver of a motor vehicle to accurately identify whether that driver may be impaired”.  For the government, the mandate is directed to the United States Department of Transportation.  The chosen system must be installed in new consumer vehicles by 2026.

Possible Impaired Driving Detection Systems
A system currently used in vehicles is the ignition interlock device.  The driver blows into a mouthpiece, and the device measures alcohol in the driver’S breath.  If the concentration of alcohol in the breath exceeds a certain threshold, the device signals the driver to stop the vehicle, and the device may then shut-off the engine.  It seems unlikely the ignition interlock device will be the chosen system, as it is not “passive”, it only tests for alcohol and not drugs, and it is susceptible to false positives.

Another possible system for detecting an impaired driver is a passive alcohol monitoring system.  The system would include a sensor which would detect the presence of alcohol in the vehicle’s ambient air.  This appears unlikely to be the chosen system because it is specific to alcohol, it is susceptible to false positives, and it could not distinguish between alcohol coming from the driver or a passenger.

A third possibility involves the use of infrared cameras and driver-assist features.  A camera installed in the steering wheel or dash of the vehicle tracks the driver’s face for evidence of inattentiveness.  If inattentiveness is detected, the system warns the driver with flashing lights and/or warning sounds.  If the driver does not timely respond, the driver-assist feature applies the brakes and stops the vehicle.  These systems are currently offered in a few consumer vehicles.

We Will Monitor the Passive Monitors
Of the passive monitoring systems identified in this article, the most promising combination is infrared cameras and driver-assist.  That system would also effectively detect drowsy driving, which poses a danger similar to drunk driving.  The chosen system may be one which has not yet been contemplated.  Whatever system is chosen will certainly be reported in the DUI News Blog.


About the Author:  Shawn Dominy is a leading DUI lawyer in Ohio and the founder of the Dominy Law Firm in Columbus, Ohio.  He can be reached through his law firm’s website:  Dominy Law Firm.

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Shawn Dominy

Shawn Dominy

Shawn Dominy is a DUI/OVI lawyer in Columbus, Ohio. He is the former President of the Ohio Association of Criminal Defense Lawyers, the state delegate to the National College for DUI Defense and a long-time member of the National Association for Criminal Defense Lawyers. Shawn Dominy authored the books 'Ohio DUI/OVI Guide', 'Ohio Vehicular Homicide Guide', and 'Ohio Vehicular Assault Guide' (Rivers Edge Publishing) and wrote a chapter in the book 'Defending Vehicular Homicide Cases' (Aspatore Publishing, 2012). He has several other published articles, and he speaks regularly at seminars teaching other lawyers about DUI/OVI. Shawn was named by SuperLawyers® as one of the top 50 lawyers in Columbus, Ohio, and he is listed as one of the 'Best Lawyers in America'® for DUI Defense. Shawn is a lifelong resident of central Ohio: he graduated from Olentangy High School and earned his bachelor’s degree and juris doctor from The Ohio State University. His office is in Columbus, and he lives in Powell with his wife and daughter. He serves with local community organizations, volunteers regularly at his church, and plays regularly with his German Shepherd. For more information, Shawn’s website is, his blog is,

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