Which concept best describes the total information gathering required to justify an arrest for DWI?

• A. Probable cause
• B. Detection
• C. Search warrant
• D. Miranda rights

Answer: (B)

Probable cause based on the totality of the circumstances is the standard that justifies a DWI arrest. An officer combines multiple indicators—driving behavior (like weaving or erratic maneuvers), odor of alcohol, physical signs (slurred speech, glassy or red eyes, unsteady balance), and field sobriety test results or admissions—so that a reasonable person would believe the driver is impaired. When these clues, taken together, meet that threshold, an arrest is supported without a warrant. “Detection” isn’t the formal legal standard used to justify an arrest, and a search warrant isn’t required to make the arrest itself (though it may be needed for searches in some circumstances). Miranda rights must be read after the arrest when interrogation begins, but they don’t establish the arrest itself.