The Brief CTA Red and Purple Line service was suspended Tuesday morning due to a medical emergency, officials said. Service on the CTA’s Purple and Red lines was suspended Tuesday morning due to a medical emergency, officials said. CTA service disruptionsWhat we know:According to the CTA, Purple Line trains stopped running around 5:41 a.m., and Red Line trains were halted shortly before that between Howard and Belmont due to the medical emergency at Berwyn. As a result, Red Line trains are only operating between Belmont and 95th Street. Purple Line trains are running again but with residual delays.