Criminal law search without warrant

Can police conduct searches without warrants?

There are times when police can perform a search without a warrant, and most searches actually do occur without warrants being issued.
If there is a reasonable expectation of privacy and there is not probable cause, a search warrant is required.

Can police search an automobile without a warrant?

The short answer is:

Yes.
Police can legally search your car if they have probable cause.
The Fourth Amendment's protection against unlawful search and seizure generally prohibits arbitrary vehicle searches by police.
If the police search your car without a warrant, your permission, or a valid reason, they are violating your constitutional rights.
Nevertheless, there are some limited situations in which police can search a car without a warrant or your consent.

Can the police enter your home without a search warrant?

The warrant permits the police to search the house when there is probable cause (a fair chance) that the search will reveal evidence of criminal activity.
Police may search a home without a warrant, when the law permits an exception to the warrant requirement.

Can the police search my Room without warrant,?

When you have no privacy interest at all, police do not need a warrant to search your hotel room.
Even if under the circumstances you do have a privacy interest, police may nevertheless perform a warrantless search of your hotel room if an exception to the warrant requirement applies—and there are many.

Type of search warrant for law-enforcement entry to property

In the United States, a no-knock warrant is a warrant issued by a judge that allows law enforcement to enter a property without immediate prior notification of the residents, such as by knocking or ringing a doorbell.
In most cases, law enforcement will identify themselves just before they forcefully enter the property.
It is issued under the belief that any evidence they hope to find may be destroyed between the time that police identify themselves and the time they secure the area, or in the event where there is a large perceived threat to officer safety during the execution of the warrant.

U.S. legal rule allowing a police officer to search a lawfully arrested person without a warrant

Search incident to a lawful arrest, commonly known as search incident to arrest (SITA) or the Chimel rule, is a U.S. legal principle that allows police to perform a warrantless search of an arrested person, and the area within the arrestee’s immediate control, in the interest of officer safety, the prevention of escape, and the preservation of evidence.