Illuminating public parks is a delicate balancing act. Local authorities must achieve Public Space Compliance by providing enough light to deter crime, while simultaneously protecting local wildlife and conforming to strict light pollution guidelines.
Bat-Friendly Lighting (Amber LEDs)
In environmentally sensitive public parks and greenways, local authorities are increasingly mandated to use narrow-spectrum, amber/red LEDs (2200K or lower) to prevent disruption to nocturnal wildlife foraging.
Bats, owls, and certain insects are highly sensitive to the blue-light wavelengths emitted by standard 4000K streetlights. High-intensity blue light can completely destroy their natural feeding corridors. By utilizing specialized "Bat-Friendly" amber LEDs, the council can provide the 10 Lux required for human navigation without blinding or disorienting the local protected fauna.
Zero Upward Light Spill
Under the Institute of Lighting Professionals (ILP) guidelines, park pathway lighting must feature a 0% Upward Light Ratio (ULR), utilizing flat-glass bollards or deeply recessed downlights.
Older "globe" style park lights are an environmental disaster, blasting 50% of their output into the tree canopy and the night sky. Modern compliance requires that every single lumen is directed strictly at the tarmac pathway. Low-level LED bollards (1 meter high) equipped with directional louvres are the gold standard, ensuring pedestrians can see the path without illuminating the surrounding foliage.
PIR Activated Pathway Lighting
To minimize the total environmental impact (Lux Hours), park walkways should integrate linked PIR sensors that "follow" the pedestrian, leaving the rest of the park in complete darkness.
Leaving a 2-mile park pathway illuminated all night for a handful of dog walkers is wasteful and ecologically damaging. Advanced "follow-me" LED systems hold the entire pathway at a dim 10% output. When a pedestrian enters the path, the bollards immediately surrounding them ramp up to 100%. As they walk, the light "bubble" travels with them, returning the path behind them to darkness.