police and law enforcement
(Answer is applicable to the USA only): A warrantless arrest is never served. A warrantless arrest is performed. Following the warrantless arrest, the arresting individual (typically) or authority is required (usually) to provide the courts with a warrantless arrest affidavit wherein the person making the arrest articulates the probable cause for the arrest, which then is submitted to a judge for review. The arrested person will already be in jail or otherwise in custody (and possibly even bonded out), before the signed warrantless arrest affidavit becomes available to the arrested person.
in your presence the person is actually committing, about to commit a felony
Incident to an arrest
true
In the manner of the way the actual arrest goes down, very little. The one major difference between arresting for a felony versus arresting for a misdemeanor, is that for a warrantless arrest of a misdemeanant the officer must have atually witnessed the misdmeanor offense take place in order to make the arrest. The only exception to this would be (in jurisdictions that have such offenses) there are certain so-called "Probable Cause Misdemeanors" for which an arrest can be made even if the officer didn't observe them take place.
In order to make a warrantless arrest, a police officer must be given permission to enter or be in an emergency situation. In both instances, the officer must have sufficient probable cause to make the arrest.
it made warrantless surveillince necessary
Stopping a vehicle that has broken no law but in only of a suspicion called a warrantless arrest is this not a violation of the 4th amendment. Is this Authorized by Legislation?
It may have originated in 'common law' HOWEVER - the police still DO have the power to make an arrest in the case of a misdemeanor being committed in their presence. ----------------------- well a police may have much athority but if they tell you to stop your vehicle they cant arrest you because it isa state law that an officer may not arrest you without a reseanoble explenation
The police must have probable cause, that is, base upon the known information it is likely that either a crime has been or is about to be committed. It is more than a hunch or mere suspicion, but less than complete certainty. For more see the related link below.
when the perpetrator is clearly about to commit an offense, when the perpetrator is actually committing the offense, when the perpetrator has just committed the offense.
It prohibits warrantless searches and seizures.