立交桥照明是道路照明里的难题：多层桥面叠加、匝道曲率大、驾驶员视线频繁上下切换，灯具布置稍有不当就产生瞬时失明区。
主线按30lx、匝道15lx、桥下空间10lx三级配置（CJJ45-2015）；桥腹灯具须防震等级M2以上并做防坠落双保险；钢箱梁段优先用轻量化灯具降低桥体荷载。
我们的立交方案用BIM模型预演每一处眩光入射角，桥下灯具全部带防坠落钢索与快拆卡扣，检修不封路。
Interchange lighting is road lighting at its hardest: stacked decks, sharp ramp curvature, drivers' gaze switching vertically — a poorly placed luminaire creates momentary blind zones.
Three levels per CJJ45-2015: mainline 30 lx, ramps 15 lx, under-deck 10 lx; soffit luminaires need vibration class M2+ with anti-drop secondary suspension; steel box-girder sections use lightweight bodies to cut deck load.
Our interchange schemes rehearse every glare incidence angle in BIM; under-deck luminaires carry safety cables and quick-release clamps for servicing without lane closures.
— 上海曦韵照明｜Shanghai Xiyun Lighting —
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