When is the Miranda warning not required?

The Miranda warning is not required during a routine traffic stop because the interaction does not typically involve a custodial situation. During these stops, the officer interacts with the driver to determine if there are any violations or issues, and the individual is not restrained in a way that would equate to being in custody. The Supreme Court has established that Miranda rights are necessary when an individual is in custody and subject to interrogation; however, a routine traffic stop is generally seen as a temporary detention rather than an arrest.

In contrast, the other scenarios mentioned may involve more significant restrictions on personal freedom or rights that necessitate the issuance of Miranda warnings in certain circumstances. For example, questioning during a public safety emergency can trigger the need for Miranda warnings if the interrogation leads to a custodial situation. Similarly, interrogations by probation officers may lead to situations where Miranda rights could apply depending on the nature of the questioning. Obtaining a search warrant doesn't inherently require Miranda warnings, but if the context involves an interrogation after custody is established, warnings would then become necessary.