“A mistake of law is no excuse.” This proverbial saying suggests us that we cannot avoid responsibility for an action with the sole defense of “I didn’t know it was illegal.” Often, our common sense can tell us things that we should not be doing, whether it be stealing something or hurting someone. Lawyers are tasked with the responsibility of knowing the law and enforcing it in the criminal courts. Police officers enforce the law on the streets, and often require extensive knowledge of the law to conduct lawful arrests and searches as a result of traffic infractions. However, the United States Supreme Court spoke out regarding the fact that police officers are not lawyers, and granted North Carolina police officers leeway in conducting a search of a vehicle based on a mistake of law.
Search and Seizure
The reasons an officer can give for lawfully pulling someone over on the roadway varies by jurisdiction. In Illinois and many states, traffic offenses are typically labeled as “primary offenses” or “secondary offenses.” An officer may conduct a traffic stop based solely on a primary offense, such as using a handheld cellular device while driving. In other states, cell phone use while driving may be considered a secondary offense, in which an officer can only cite you or hold you accountable for the infraction if they pulled you over for something considered a primary infraction in that jurisdiction. For example, in a jurisdiction that has a seatbelt requirement as a primary offense, an officer could pull you over for failing to wear a seatbelt, but also note that you were on your cell phone and cite that as a secondary offense.
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