Mérida
road illuminance.
Road illuminance, average lux and uniformity for a baseline residential street in Mérida, Yucatán. Reference NMX-J-307-ANCE and EN 13201.
Baseline illuminance map
Residential road baseline (100 W LED, 14000 lm, Type III optic, 9 m height, 30 m spacing, 9 m width).
Road illuminance in Mérida
Mérida sits at latitude 20.9674° and altitude 9 m, in a warm sub-humid climate. With an FM of 0.78 recommended for baja pollution conditions, the baseline residential scenario (100 W LED, 14000 lm, Type III optic, 9 m height, 30 m spacing, 9 m width) provides the typical illuminance values shown above.
For local validation, increase FM by 0.05 in dusty industrial zones or decrease height-to-spacing ratio when uniformity Uo drops below the NMX-J-307-ANCE threshold (0.25 for residential roads, 0.40 for main avenues).
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