Oklahoma requires UM, treats an underinsured driver as uninsured when damages exceed the other limits, and bars stacking on policies after 2014
Oklahoma's rules are in 36 O.S. 3636. The fault rule is 23 O.S. 13 and the deadline 12 O.S. 95.
Read how stacked and single-limit coverage differ in Oklahoma, check what section 3636 says, or see how Oklahoma UM covers underinsured drivers.