Traffic is again flowing smoothly on the Kansas Turnpike after a semi-truck jackknifed into a barrier wall at milepost 214.6 around 6:45 Sunday evening. The truck had traffic at a standstill for nearly two hours, according to Kansas Turnpike dispatchers. The semi blocked westbound lanes after another vehicle made an “unsafe lane change,” causing the truck to swerve to miss it, hitting the wall. There were no injuries, according to dispatchers.