What book is recommended for information on channelization in transportation engineering?

• A. AASHTO Green Book
• B. AASHTO Red Book
• C. Highway Capacity Manual
• D. National Manual on Uniform Traffic Control Devices

Answer: (A)

The AASHTO Green Book, officially known as the "A Policy on Geometric Design of Highways and Streets," serves as a key resource in transportation engineering, particularly for channelization, which involves the design and implementation of roadways to improve the flow of traffic. This book provides guidelines on geometric design principles, including lane widths, shoulder design, and the appropriate use of channelization features such as islands, markings, and signs.

The Green Book is essential for engineers as it offers comprehensive recommendations for designing safe and efficient roadways that facilitate better traffic management. Channelization is an important aspect covered within its wide-ranging topics, helping to enhance traffic flow and safety at intersections, transitions, and other complex road segments.

The other available resources serve different functions in transportation engineering; for instance, the AASHTO Red Book focuses more on design standards for bridges and structures, while the Highway Capacity Manual primarily addresses methods for analyzing road capacity rather than design features like channelization. The National Manual on Uniform Traffic Control Devices is more concerned with the standards and guidelines for traffic control devices rather than the broader geometric design aspects that the Green Book covers.