Dennard, 24, was pulled over and cited about 2 a.m. when police said they spotted him straddling a lane line, the Omaha World-Herald reported.
He was later arrested and charged with DUI, refusing a chemical test and a driving infraction, Lincoln Police Department Capt. Jason Stille said.
Dennard was alone in the vehicle when stopped, Stille said.
In March, the former Nebraska football player was sentenced to two years' probation, a 30-day jail sentence and 100 hours of community service after being convicted of felony assault on a police officer who responded to a fight outside a Lincoln bar more than a year ago.
Pot vending machine to debut
Pistorius testifies he didn't consciously pull trigger when he shot girlfriend