Jackson drove his black Corvette into a large planter box and a stop sign, dragging the sign across a two-lane road. A team source told ESPN.com that Jackson was not injured.
While it had been earlier reported by TMZ that Jackson was engaged in a street race with fellow Seahawks running back Marshawn Lynch, Renton police say that was not the case.
“There is no evidence he was drag racing anyone,” Renton police spokesman David Liebman said, according to the Seattle Times. “He was leaving the facility, and he was clearly driving too fast when he hit a street sign.”
Lynch drove away unharmed, according to TMZ.
The Seahawks (2-4) take on NFC West rivals the San Francisco 49ers (2-4) on Thursday night.
Information from ESPN.com Seahawks reporter Sheil Kapadia contributed to this report.