A CMS school bus caught fire Tuesday afternoon in southwest Charlotte. According to CMS, there were not any students on board bus 188 at the time. A witness told WBTV that the driver was still on the bus and was not injured during the fire but shaken. Road and Downs Road, according to CMS. The driver reported she smelled smoke and stopped the bus immediately. She exited before the bus ignited, according to reports. Witnesses say nearby workers saw the fire and rushed to help. They used about four fire extinguishers to help put out the fire. Firefighters arrived to put the fire completely out. Firefighters met with the media to give an update on what happened and where the fire possibly started.