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'Street Lighting and Colour Temperature'


Street lighting and colour temperature, a relationship which has existed since the first street lamp. Today we have a decision to make with the specification of new modern LED lighting and the effect the lighting will have on the end user.

We often (unless you're a lighting enthusiast) do not notice how a lamps colour temperature changes our state. For example, the colour temperature of a lamp can make the end user feel cold or warm.

I was involved with and designed one of the first LED street lighting installations in the UK - over ten years ago - at the time we installed over 500 LED street lights with a colour temperature specified at 5700K. This, for a street light installation was very blue, a very cool colour - cool in feel.

We surveyed the residents before and after the installation - the majority thought the works were an improvement to the area. Interestingly and I guess not surprisingly, a lot of residents commented on the cold feel and appearance, especially compared to what they had installed before, which were SOX lamps.

With the previous installation having a colour temperature of 2700K and the new 5700K, it is easy to see why members of the public commented on the difference. No