Final answer:
The Miranda warnings are necessary for both felonies and misdemeanors during custodial interrogation, ensuring protection of constitutional rights.
Step-by-step explanation:
The Miranda warnings must be given when a suspect is in custody and subject to interrogation, regardless of the nature of the offense. This means that the warnings are required for both felonies and misdemeanors if the suspect is under custodial interrogation. The warnings are not typically required for routine traffic stops, unless the stop escalates into a situation where the person is in custody and subject to interrogation. The Miranda warnings are a legal safeguard to protect a suspect's Fifth Amendment right against self-incrimination and Sixth Amendment right to an attorney, as established in the landmark case Miranda v. Arizona.