You live in the US? They cant search your car, unless they have reason to suspect a crime is in progress or anything is suspicious. Example: A visible weapon, visible narcotics or the smell, you look high or drunk, anything that can be used in a crime is visible, or any other illegal things. (by the way, maybe its different in your state but I dont think so)
YOUR RIGHTS
- You have the right to remain silent. If you wish to exercise that right, say so out loud.
- You have the right to refuse to consent to a search of yourself, your car or your home.
- If you are not under arrest, you have the right to calmly leave.
- You have the right to a lawyer if you are arrested. Ask for one immediately.
- Regardless of your immigration or citizenship status, you have constitutional rights.
"YOUR RESPONSIBILITIES
- Do stay calm and be polite.
- Do not interfere with or obstruct the police.
- Do not lie or give false documents.
- Do prepare yourself and your family in case you are arrested.
- Do remember the details of the encounter.
- Do file a written complaint or call your local ACLU if you feel your rights have been violated."
If the Officer breaks the law, and searches you without possible reason for suspicion, you can use this against them and usually get off the hook. Another thing to keep in mind, if you are pulled over for switching lanes without signaling this is probable cause for suspicion and not a traffic violation (At least in Iowa), you cannot get a ticket and dont have to show the police anything unless they have probable cause for suspicion.