A Silver Alert is a public notification system in the United States to broadcast information about missing persons, especially senior citizens with Alzheimers disease, dementia, or other mental disabilities, in order to aid in locating them. In Utah, the Silver Alert program was started in 2019. The Utah Silver Alert system is activated when a law enforcement officer or agency determines that a missing individual meets the criteria to be designated as an endangered adult as defined in Section 53-10-702 of the Utah Code. The criteria include being over the age of 60 or having dementia. Within minutes of activation, the Silver Alert sends a message to news media outlets, nearby law enforcement agencies, and displays the missing persons information on variable-message signs on roadways to alert motorists to be on the lookout for missing seniors. The alert notification is displayed on the UDOT electronic signs for 8 hours during the day, or 16 hours if the alert is issued after 7:00 p.m., unless the alert is cancelled earlier. However, there is no data to indicate whether people are actually paying attention when a Silver Alert gets posted.