Las Vegas police must read Miranda warnings to suspects in "custodial interrogation. " This is when the suspect is not free to leave (usually after an arrest).Police also are not required to provide Miranda rights during preliminary questions following a traffic stop. Therefore, police do not have to read arrestees their Miranda rights until they begin asking them questions. You have the right to see the warrant when you are subject to an arrest. While Miranda warnings are extremely important, an officer's failure to read them in and of itself does not result in a dismissal of criminal charges. Under the law, Miranda Rights only need to be read during "custodial interrogation. Even if there had been a failure to honor Miranda in your case, that would not give you grounds to have the theft charge dismissed. 013 - Disclosure of rights required before initiating custodial interrogation of child 1. It is important to note that police are only required to Mirandize a suspect if they intend to interrogate that person under custody.