The Jacksonville Sheriff's Office has made it clear on social media that the department is planning to enforce a revised law in Florida that was ruled unconstitutional in its previous form in 2012. Jacksonville Sheriff's Office Facebook warning. © Jacksonville Sheriff's Office Jacksonville Sheriff's Office Facebook warning. "What does this mean? It means that you will have to listen to your car radio at a volume that is NOT plainly audible at a distance of 25 feet or more," the Sheriff's Office said on social media last week, adding that Statute 316.3045 will "once again become enforceable." But some Duval...