Risk ID,Risk Description,Likelihood,Consequence,Risk Score,Mitigation Action,Risk Owner
PTA-ENG-001,"Signal system failure on a key line, leading to major service disruption and potential safety incidents.",4,5,20,System-wide upgrade project for signaling and control systems.,Chief Engineer
PTA-STN-001,"Prolonged escalator failure at a major interchange station, causing significant passenger congestion and accessibility issues.",3,3,9,Increase frequency of preventative maintenance and stock critical spare parts.,Director of Stations
PTA-STR-001,"Structural failure due to cracking in concrete supports on an elevated track section, posing a risk of derailment.",2,5,10,Implement continuous structural health monitoring with sensor technology and regular physical inspections.,Director of Structures
PTA-IT-001,"Cybersecurity breach of the passenger information system, resulting in reputational damage and passenger confusion.",3,2,6,Install next-generation firewalls and conduct mandatory annual cybersecurity training for all staff.,IT Director