The police in many countries do not need a warrant to do a vehicle search. Probable cause is enough to do a roadside search and that could be a bottle rolling on the backseat floor, the smell of alcohol on your breath or the smell of marijuana either burned or fresh.
In certain circumstances, a search warrant is not necessary. For instance, if your vehicle is being towed by the police, most states allow officers to conduct an inventory search of the vehicle. Also, what you call a "search" may be a "pat frisk" which has a very specific meaning in law. This allows officers to conduct a limited search of the area within the occupants control. This search is limited to weapons and is only allowed provided the officer has reasonable suspicion to believe a weapon may be found. There are some other situations that allow searches such as when evidence is in "plain view" of the officer.
No. If they do ask, you can refuse. However, there are still several justifications for the warrantless search of a vehicle:
There are other justifications, but these are the most common.
If an officer asks to search your vehicle, it's likely he has no other justification for doing so. It is your right to refuse. If you do give him your consent, you can withdraw consent at any time, provided he has not found something which would amount to probable cause to search further. Once he finds your bong or your sawed-off shotgun, it's Game Over.
Police may not need a warrant to search a vehicle according to the mobile conveyance doctrine. A vehicle must be in a public place, readily mobile, and the Officer must have probable cause to believe contraband or evidence of a crime is contained with in the vehicle. If all of the above is met, the Officer will not need a warrant to search the vehicle.
Yes
Yes they can search it
yes, it is not considered a "search"
If they have probable cause.
no
I think they only can search the car if they have probable cause.
Police are liable for the damage that they do to your car. You can file for damages against the police department to get your money.
I think that would be rather difficult for you to search your car while in handcuffs. Now, can the police search your car while you are handcuffed? Sure if they have your permission or if they have a search warrant.
Prowl is what they do, not what they are. To go about stealthily in search of prey
The vehicle can be searched with probable cause, or if the car is being impounded an inventory will be done. The police do sometimes ask for permission as well, and that is another way the search can be valid.
The fourth amendment protects citizens from an unreasonable search of your car.
NO they can not unless there has been a warrant to do so.