Troopers from the Franklin barracks say they arrested 38-year-old Angela Cogswell, of Grove City, on last Friday.
Police say Cogswell was pulled over on Nov. 5 and gave police her sister's name, 37-year-old Tanya Best, of Rimersburg.
Cogswell then went to court in December and pleaded guilty to citations for driving with a suspended registration and without proof of insurance, even agreeing to a plan to pay the fines - all in Best's name.
Best learned of the ruse when her license was suspended for six months.
Online court records don't list a defense attorney.