A Carroll motion is an important motion when someone is charged with Possession with Intent to Deliver drugs. These motions are filed by Bucks County criminal defense lawyers and are done pursuant to Commonwealth v. Carroll, 438 Pa.Super. 55, 651 A.2d 171 (1994). These motions argue that a portion of the drugs seized during an arrest were used for personal use. This is done frequently to avoid a mandatory minimum sentence on the weight of the drugs. Essentially, if some of the weight is for personal use, it should not be "counted" towards the mandatory sentence.
This is a pretrial motion filed where your criminal lawyer should most likely get an expert in drug usage to testify to the amount of personal use by the defendant.