Adaptive Ramp Metering

Adaptive ramp metering helps improve freeway safety and traffic flow by controlling how vehicles enter the highway. Using traffic signals on entrance ramps, these systems release vehicles at timed intervals to prevent congestion and reduce merging conflicts. By smoothing the flow of vehicles onto the freeway, ramp metering decreases crashes, shortens travel times, and keeps traffic moving more efficiently—especially during peak travel periods. Explore the executive briefings, data visualizations, and case study to see how ramp metering enhances freeway performance and supports safer, more reliable travel.