​The United States Supreme Court recently denied review of a ruling from the Seventh Circuit Court of Appeals regarding the FMCSA’s electronic logging device (“ELD”) mandate. Owner-Operator Indep. Drivers Ass’n v. United States DOT, 840 F.3d 879 (7th Cir. 2016). The mandate requires drivers to have ELDs to track their work and hours driving. The devices track both driving and non-driving activities. The Owner-Operator Independent Drivers Association (OOIDA) claimed the mandate is the equivalent of warrantless surveillance of truckers in violation of the Fourth Amendment. OOIDA also questioned the technical specifications of the devices and the enforcement of the regulation. Groups in support of the ELD mandate included safety advocates, the American Trucking Association and large motor carriers, who say the measure is designed to assist in complying with federal hours of service rules. OOIDA reports that it will continue lobbying Congress through its “Knock Out Bad Regs” campaign as well as working with the Federal Motor Carrier Safety Administration.  OOIDA argues that the requirement does not ensure safety, but instead operates as an invasion of the privacy and rights of drivers. Currently, over 500,000 commercial motor vehicles are equipped with ELDs and the market is a $1 billion industry.