Reese Witherspoon Accident 84-Yr-Old Forced to RETAKE Driver's Test

9/9/2011 3:30 AM PDT

Reese Witherspoon Accident -- Cops Sentence 84-Year-Old ... to DMV

The 84-year old woman ticketed for hitting Reese Witherspoon in a crosswalk just got slapped with another stiff penalty -- she's been ordered to the DMV to retake her driver's test.

Law enforcement sources tell TMZ ... Santa Monica police have asked the DMV to haul in the elderly driver for a full re-examination within the next 30 days. In addition to the driver's test -- we're told she will have to take an eye exam, and provide a list of medications she's taking.

The woman was already cited for failure to yield to a pedestrian in a crosswalk ... but making anyone -- much less an octogenarian -- stand in line at the DMV is a punishment that sticks with you.