The objective of this research is to develop a comprehensive toolkit of actionable strategies that transit agencies can use to prevent cyberattacks and effectively respond to cyber incidents. This research will examine (1) cybersecurity threat and attack vulnerability of connected vehicles and (2) cybersecurity incident and event categorization of connected vehicles. The key audiences for this project are state departments of transportation and U.S. public transportation providers in urbanized areas of all sizes, rural areas, and Tribal communities.