A freight train derailment occurred near Oak Lawn and Chicago Ridge, significantly impacting the Metra SWS Line and prompting the suspension of services. Roads in the southwest suburbs are closed, leading to major delays for commuters ahead of rush hour. Crews are currently investigating the cause of the derailment and working to clear the scene. The repercussions of the incident are expected to affect travel for an extended period, with reports indicating that Metra service may not be restored until later in the week.