Specifications include, but are not limited to: The objective of this research is to develop a comprehensive toolkit of actionable practices and strategies to help transit agencies prevent cyberattacks and effectively respond to cyber incidents. This research shall 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. The TCRP is seeking the insights of proposers on how best to achieve the research objective. Proposers are asked to develop and present a detailed research approach for accomplishing the project objective. The work proposed must be divided into tasks, and proposers must describe the work proposed in each task. Proposers are expected to present a research plan that can realistically be accomplished within the constraints of available funds and contract time. Proposals shall: (1) present the proposer’s current thinking in sufficient detail to demonstrate their understanding of the issues and the soundness of their approach for meeting the research objective, (2) identify data and data sources that may be used to undertake this research, and (3) propose a format(s) for the final research product(s).