What equation provides information on crash (accident) modification factors?

• A. AASHTO Safety Manual
• B. Roadside Design Guide
• C. Highway Safety Manual
• D. Urban Street Design Guide

Answer: (A)

The correct choice is the Highway Safety Manual, which provides information on crash modification factors (CMFs). CMFs are numerical values used to estimate the expected change in crashes as a result of a specific highway safety improvement or alteration. The Highway Safety Manual is a comprehensive resource that offers guidance on the implementation of safety measures and includes a wide range of CMFs for various roadway improvements, making it essential for transportation engineers and planners to evaluate safety strategies.

While the AASHTO Safety Manual provides important standards and guidelines related to roadway design and safety, it does not specifically focus on crash modification factors as a standalone resource. The Roadside Design Guide focuses largely on the design of roadside features to enhance safety for vehicles and pedestrians, and does not delve into CMFs. The Urban Street Design Guide primarily addresses urban street design principles, aspects of livability, and multimodal transportation, but it does not focus on the analysis or application of CMFs.

Thus, the Highway Safety Manual stands out as the dedicated resource for crash modification factors in the context of transportation safety.