What Are the Trailers With the Blue Flashing Lights? A Deep Dive Into LiveView Technologies Mobile Surveillance Units What are the trailers with the blue flashing lights? If you’ve driven past a construction site,vacant lot, retail parking lot, or industrial yard lately, you’ve likely seen one of these eye-catching mobile surveillance units keeping watch. These trailers, equipped with advanced camera systems and flashing blue strobe lights, are part of a growing…