A motorist is driving below the speed limit is, by itself, insufficient to give rise to a reasonable suspicion of driving while intoxicated warranting an investigative stop. While reasonable suspicion is not a stringent standard, it requires more than a mere observation that a motorist is driving slowly. There must be additional indicia of erratic driving or unusual behavior before a reasonable suspicion arises justifying an investigative stop. Where no reasonable suspicion exists, an inquiry stop may nonetheless be justified under the community caretaking doctrine when a police officer has an objectively reasonable belief that a slow driver is in need of emergency assistance. Because the record before was insufficient to permit review of the district court's ruling, the Court vacated the district court's order and remanded the case to the district court for further proceedings applying the clarified standards.
L'Hommedieu, Michelle, "Summary of State v. Rincon, 122 Nev. Adv. Op. 99" (2006). Nevada Supreme Court Summaries. 525.