In the field, I hardley ever read Miranda to folks I have arrested as well. Bottom line, when I arrest someone, I already have my PC and could really give a crap what some thug has to say... all they do is lie like shit anyway. DUI's are one time I always read Miranda right after telling them they are under arrest.
Many agencies like for road officers to simply wait for the Dective to respond, in serious cases, before any attempt is made to question offenders. Mainly because, as we all know, once the suspect invokes his rights, the "game" is over, at least for a while.
Remember, Miranda is only required when a person is in CUSTODY and they are being subject to QUESTIONS OR ACTIONS which are likely to illicit an incriminating response. If you have nothing to say to the arresed person, Miranda is not required. It gets no more complicated than that. Also, don't forget, Miranda has two parts, both equally as important, the "Rights Portion" and then there is the "Understanding/Waiver Portion". Proper Miranda warnings must include both.
I have never seen or heard of an "original" Miranda warning. As many have posted, there are quite a few varieties of Miranda out there, but all must contain some basic points:
RIGHTS:
The right to remain Silent.
If you speak, what you say can/will be used against you in court.
You have a right to a lawyer, if you can't afford one, the State will appoint you one.
If you give up your right to remain silent, you still have the right to stop talking at any point.
WAIVER:
Do you understand your rights as I have explained them to you?
With these rights in mind, do you wish to talk to me/us now?
It always tickles me when after arresting someone, I hear the arrested person make a comment something to the effect "you screwed up man...you aint read me my rights" or "hey man, I want to know my rights, you aint told me my rights."