If probable cause is given then yes, the officer can.
No. Unless you are being arrested or give the officer consent to search the car a simple traffic infraction alone does not give the right to search a vehicle.
No. Officers can only search your vehicle if 1) you consent or 2) if they have probable cause. If the officer has probable cause to search your vehicle, they generally won't ask you for permission, but will instead tell you that they are going to search your vehicle. Whether probable cause for a search exists depends on the circumstances.
Yes, a search can always be conducted when there is consent.
An individual person cannot search your things without your consent. The only exception is if you implicitly consent. For example, if you go to a concert, you consent to obey the rules of the facility, which may include consenting to a brief search at the door.
No. The officer would have to have other reasons than a revoked consent. Revoking a consent does not lead to the officer having a 51%/ more likely than not justification that there is evidence of a crime. There has to be other factors that play into it. And even if he does have probable cause he would need to get the warrant and then continue the seach.
Yes, a doctor certainly has the knowledge and skills to be able to carry out a search of body cavities. Usually it can not be done without your consent, but there are special circumstances in which a doctor may conduct the search without your consent.
Yes, it can be for their own safety as well as other reasons. A person in custody, minor or adult, must be searched before they are booked. Seeing an officer does not need permission from a parent to arrest their child, a search without the parent's permission would coincide.
Certainly. In many cases written consent would be difficult.
A police officer must have either your consent, a warrent, or probable cause to search your vehicle - probable cause to search can include everything from a partially hidden weapon (gun), blood, body parts to just the cap of a alcohol container sticking up from a seat.
There is no consent needed from anybody when there is a valid search warrant in play. The court gives the police the right to search by granting the search warrant.
It depends upon the Act's aplicability under which one have been booked. E.g under Information Technology Act 2008, Inspector can search and arrest without warrant any person found therein who is reasonably suspected of having committed or of committing or of being about to commit any offence under this Act
legally i do not think so