Officers had reasonable suspicion to stop appellant’s van where officers received a dispatch report of an 80s model blue van “weaving all over the roadway,” driving northbound on Highway 99, and appellant was seen driving a blue van in the correct traveling direction and position a short time later, even though the officer who received the dispatch saw no erratic driving. Under the totality of the circumstances, the anonymous tip was sufficiently reliable to justify the investigatory stop of the van to determine whether appellant was impaired. However the court noted that the “paucity of details regarding the reckless driving tip” rendered the case close.