.sowin-summary{font-family:Arial,Helvetica,sans-serif;color:#4d5868;line-height:1.78} .sowin-summary p{margin:0 0 12px} .sowin-summary .core-key{font-size:18px;font-weight:900;color:#123c73;letter-spacing:.005em} @media(max-width:640px){.sowin-summary .core-key{font-size:17px}} SOWIN provides a human-centric adaptive tunnel lighting system for tunnel entrances, threshold zones, transition zones, interiors and exits. The control chain can connect portal luminance sensors, traffic inputs, CH-800 gateways, intelligent lighting cabinets, circuit controllers and SLC810/SLC910 lamp-level controllers. Measured exterior luminance, traffic conditions and approved zone curves allow the system to coordinate output instead of relying on one fixed entrance scene. Project-configured CCT, ramp rates, local fallback and manual authority help preserve visual continuity when weather, traffic or communication conditions change. Final luminance levels, zone lengths, sensor locations, dimming curves and CCT settings depend on tunnel geometry, design speed, pavement, portal orientation, luminaire optics, local standards and witnessed site acceptance.