In a data-driven safety management process, network screening is the initial step in identifying safety issues across the network. Which option best describes this step?

• A. It is used to model traffic flow under hypothetical scenarios.
• B. It is the initial step in a data-driven safety management process.
• C. It is used to calibrate speed limits.
• D. It is used to identify high-crash locations through data screening.

Answer: (B)

The key idea here is that network screening serves as the first pass in a data-driven safety program. It involves looking across the entire network to spot potential safety issues using broad, readily available data (such as crash counts, injury severities, exposure, and road characteristics). This step doesn’t solve specific problems by modeling traffic flows or tuning speed limits; instead, it flags locations or areas that look problematic so you can focus deeper analysis and targeted interventions where they’re needed. By starting with a network-wide screen, you allocate attention and resources efficiently, guiding subsequent steps like detailed data analysis, identifying high-priority locations, and designing or evaluating safety measures. The other options describe more specific activities—modeling scenarios, calibrating speed limits, or a direct outcome of screening (finding high-crash locations)—which are not the initial, broad screening process.