What is the maximum number of lines and characteristics the PCMS should display?

The correct choice indicates that a Portable Changeable Message Sign (PCMS) should display a maximum of 3 lines with 8 characteristics each. This configuration is optimal for ensuring clarity and readability of the message for drivers, allowing sufficient space to convey important information without overcrowding the display.

Three lines provide a balanced structure, ensuring that the message can be segmented adequately, while 8 characteristics for each line grants versatility to convey various types of information, such as warnings, instructions, or traffic updates. A well-managed display aids in communication with road users, enhancing safety and compliance.

The configuration reflects guidelines and standards for effective traffic management using technology, emphasizing the need for a sign system that balances information content with visual comprehensibility, particularly in dynamic roadside environments.