Terrence O’Sullivan, a widely respected criminal attorney with decades of courtroom experience, is shedding light on what drivers should understand about DUI charges. With DUI-related arrests rising across several U.S. states, O’Sullivan says many people underestimate how quickly a routine traffic stop can turn into a life-changing legal battle.
According to O’Sullivan, one of the biggest mistakes drivers make is assuming a DUI is a minor offense. In reality, a conviction can lead to heavy fines, license suspension, mandatory classes, and even jail time depending on the circumstances. He notes that drivers often don’t realize how important early legal representation is, especially within the first 24–48 hours after an arrest.
O’Sullivan also explains that many DUI cases hinge on procedural details — from how the breathalyzer test was administered to whether the officer followed proper protocol during the stop. A skilled criminal attorney can challenge improper testing, faulty equipment, or rights violations that may have occurred during the arrest.
He advises drivers to stay calm, avoid making self-incriminating statements, and request legal counsel immediately if they are detained. O’Sullivan emphasizes that understanding your rights is the first line of defense and can significantly influence the outcome of a case.
With DUI enforcement becoming stricter nationwide, O’Sullivan’s insights serve as a timely reminder: staying informed and prepared can make all the difference when facing the legal system.




