A car slowed down with traffic at 5:20 p.m. on Interstate 75, but the car behind it didn't follow suit.
After the first rear-end accident, a series of crashes followed. In all, five cars crashed, mostly hitting the first car, and causing a two-hour traffic holdup on I-75 North.
Two people were transported to Erlanger hospital with non-serious injuries, and there were no deaths.
Although the interstate is flowing now, Chattanooga police spokeswoman Sgt. Jerri Weary said police officers were still at the scene as of 7:35 p.m.