a common misconception by the general public that everyone who is
arrested MUST be read their Miranda rights. Not true. if an officer
does not ask the arrestee incriminating questions about the alleged
crime, there is no requirement for Miranda. It gets very tricky, but
there are many instances when people are arrested and not advised of
their legal rights, especially by the officer in the field. A common
example is an arrest for driving on a suspended driver's license.
The fact that the computer records show that the license is
suspended is prima facia evidence of the violation, so the officer
has no need to question the individual for verification.