Which act addresses security measures for maritime transportation systems?

The Maritime Transportation Security Act is the correct answer as it specifically focuses on enhancing security measures for maritime transportation systems. Enacted in response to the increased need for security after events like the September 11 attacks, this legislation establishes requirements for port security planning and the implementation of security measures for vessels and port facilities. Its primary goal is to protect the nation’s maritime interests and ensure the security of cargo and passenger transport across waterways.

The other options, while pertaining to various aspects of transportation and safety, do not specifically target maritime transportation security in the comprehensive manner that the Maritime Transportation Security Act does. For example, the Transportation Security Improvement Act and the Marine Safety Act address broader transportation or marine safety issues without a specific focus on maritime security measures. Similarly, the Maritime Safety and Security Act is a broader piece of legislation that encompasses various aspects of maritime safety but is not as directly tailored to addressing the security challenges specifically faced by maritime transportation systems.