In some situations, the officer was not legally allowed to pull you over. If this defense applies to your case, most evidence the officer found after you were pulled over is not admissible in court. This often leads to your case being dismissed.
The officer must have witnessed you committing a crime or traffic infraction. Some examples of proper stops include where the officer stopped the driver for having a tail light out, where the driver ran a stop sign, or where the driver failed to maintain his or her lane.
You must be given sufficient warning as to applicable traffic rules. For example, the officer may not pull you over for speeding if there was no speed limit sign. Also, the officer may not stop you for violating a traffic sign or signal that was not visible from the road, such as where trees or bushes were blocking it from view. If you were stopped and you did not commit a crime or traffic offense in the presence of law enforcement, we may be able to get some evidence thrown out.