William Hilton Paul, son of U.S. Sen. Rand Paul, R-Ky., pleaded guilty Tuesday to driving under the influence in Lexington.
Paul, who entered the plea in Fayette District Court, was ordered to pay $718 in fines and court costs, and enroll in a safe-driving program, which is routine in DUI cases. His driver's license was suspended for 45 days.
Lexington police cited Paul about 11:25 a.m. April 19 after his Honda Ridgeline pickup truck struck the rear of an unoccupied parked car on Woodland Avenue.
A police citation stated that Paul was "belligerent" when an officer approached, and had bloodshot eyes, slurred speech and "a strong odor of alcohol."
He failed a field sobriety test, but he refused to take a blood test, the citation said.
It was his third alcohol-related run-in with the law.
William Paul was cited for being a minor in possession of alcohol in October 2013 at Keeneland Race Course. He also was arrested at a Charlotte, N.C., airport in January 2013 and charged with underage drinking, disorderly conduct, and simple assault against a female flight attendant.
He completed alcohol-education classes and 150 hours of community service in the Kentucky case. The North Carolina charges ultimately were dismissed.
William Paul is a senior at the University of Kentucky, majoring in communications.
His father is seeking the Republican presidential nomination.