An exception to the Miranda requirement is the brief, routine traffic stop, but a custodial interrogation of a DUI (driving under the influence) suspect requires the Miranda warning.

Question

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During a routine traffic stop, which is not considered custodial, Miranda warnings are not required. However, if the situation escalates to a custodial interrogation, such as when a suspect is detained for a DUI investigation, Miranda warnings must be given before any interrogation begins.

An Exception to the Miranda Requirement Is the Brief, Routine