Where can you find information about braking/skidding distance?

• A. Traffic Engineering Handbook
• B. AASHTO Green Book
• C. HB Sec. 5.1.4.3
• D. Highways and Transportation Manual

Answer: (C)

Braking and skidding distances are crucial elements in transportation engineering, as they directly impact road safety and design. The information regarding these distances is typically found in resources that focus specifically on highway design and vehicular dynamics.

The reference to the specific section, which is HB Sec. 5.1.4.3, indicates a detailed guideline within a well-regarded highway design publication. This section likely provides empirical data or standardized calculations related to braking actions and the factors that influence skidding distances such as vehicle speed, road surface conditions, and vehicle characteristics. This level of specificity is essential for engineers when they are designing safety features on roadways or conducting traffic studies.

The other options listed are broader in scope. While the Traffic Engineering Handbook and the AASHTO Green Book may contain relevant general information about transportation practices, they focus more on traffic management and overall highway design rather than the specific metrics of braking and skidding distances. The Highways and Transportation Manual typically covers legislative and regulatory information pertinent to highway policies, which may not delve deeply into technical specifics like braking distances. Thus, the most precise and relevant information is indeed found in the cited section of the highway design manual, confirming its importance for engineers needing to apply this data in real-world scenarios