Cops can't automatically search your car, but the circumstances may allow them to. A traffic stop normally ends with a citation—the annoyed motorist simply drives away. But an officer will sometimes prolong a traffic detention, in the process searching the driver’s vehicle.
Most often, traffic stops result in the driver being issued a warning or a citation due to a driving violation. In some cases, a traffic stop can escalate and create complications for the driver. Unfortunately, many drivers are unaware of their legal rights during a traffic stop. A traffic stop does not suspend a driver's rights.