Under s. 627.727, a policy that carries bodily injury liability on a car registered or principally garaged in Florida has to include uninsured motorist coverage as well. It protects the people insured under your policy who have a legal right to damages for bodily injury from the owner or driver of an uninsured vehicle. In plain terms, your own policy stands in for the coverage the other driver should have had.
The word uninsured reaches further than it sounds. The statute also treats a vehicle as uninsured when its liability insurer has provided bodily injury limits lower than the total damages of the person entitled to recover. So UM can matter after a crash with a driver who does carry insurance, once that driver's limits run out before your damages do.
Your own PIP pays its benefits on your injuries up to its limits, and the PIP and bodily injury guide covers that layer. UM is the part that stands behind it when the at-fault driver's coverage is missing or too thin to reach the rest.
