One of the more common questions that DWI defense attorneys get asked by potential clients is the particular order of events as an impaired driving case moves through our state’s law enforcement and judicial systems. Naturally, any DWI or DUI case begins with the driver being pulled over by a police officer for some other traffic offense, which could be as minor as a broken taillight. But that’s just the beginning of a long and potentially costly process.
Whether the violation occurs in Hudson, Mercer, Ocean or Monmouth County, the initial stage of a drunken driving case entails the suspect being stopped by a patrolman usually for a typical traffic violation, such as defective vehicle equipment, inability to maintain a lane (i.e. crossing over the lane markings besides that of changing lanes). To be a valid, this traffic stop should be for a legitimate violation in which the patrolman has “reasonable suspicion” that a motor vehicle violation has been committed.
Based on the New Jersey Supreme Court case, State v. Carpentieri, the officer or patrolman who pulls a motorist over must have an articulable and reasonable suspicion that a traffic law violation has occurred in order for subsequent DWI charges to be legally valid. But this is only the first qualification, as once a driver is pulled over the officer needs to have “probable cause” to believe the driver has been operating that vehicle while under the influence of alcohol or is otherwise impaired by an intoxicant, prescription medication, or other substance, such as marijuana.