What is access management and why is it important?

• A. The regulation of pedestrian crosswalk timing at intersections.
• B. The design of medians and turning radii to influence vehicle paths.
• C. The design of ramp metering on freeways.
• D. The control of points where vehicles can enter or exit a road to maintain traffic flow and safety.

Answer: (D)

Access management is about controlling where vehicles can enter and exit a road and how those access points are designed and spaced to keep traffic flowing smoothly and safely. By limiting driveways, consolidating access, and using design features like medians, turn lanes, and appropriate spacing, the number and type of vehicle conflicts are reduced, crashes are less likely, and major streets can carry traffic more reliably. That makes the description focusing on controlling entry and exit points to maintain flow and safety the best match.

The other ideas describe related but narrower aspects: pedestrian timing at intersections deals with pedestrians and signals, not how a road’s access points are managed; medians and turning radii influence vehicle paths but aren’t about controlling access points themselves; ramp metering governs how vehicles enter freeways, which is a specific tool within access management but does not capture the broader concept of managing all access points along a road to preserve safety and efficiency.