PRIM ELD is a trucking app designed to keep you compliant with the Electronic Logging Device mandate. Our ELD solution consists of an electronic logbook app for managing hours of service (HOS) and your trucking operation, ECM hardware, and Manage Portal for compliance monitoring. Designed to help you comply with and understand DOT’s HOS rules, PRIM ELD is trucker-friendly, easy to use, and powerful enough to manage any fleet size.