According to AASHTO guidelines, what section provides information on islands?

• A. Sec. 9.6.2
• B. Sec. 9.6.3
• C. Sec. 9.8.4
• D. Sec. 9.7

Answer: (B)

The reference to section 9.6.3 of the AASHTO guidelines is correct because this section specifically addresses design considerations related to traffic islands. It encompasses aspects such as dimensions, features, and placement of islands in roadway design to enhance safety and operational efficiency.

Traffic islands serve multiple purposes: they can be used to provide pedestrian refuge, channelize traffic, and help in managing the flow of vehicles at intersections. The guidelines in this section assist engineers in understanding how to effectively incorporate these features into their designs, ensuring that they comply with standards for visibility, accessibility, and safety.

In contrast, other sections mentioned might cover related topics, such as traffic control devices or related design criteria, but section 9.6.3 is specifically tailored to the design principles applicable to islands. Therefore, when designing intersections or roadways that include islands, referencing section 9.6.3 will provide the necessary details to ensure compliance with AASHTO recommended practices.