LED Street Lighting - An Evaluation of Criticism

LED Street Lighting Solutions

Whenever something new is installed, it draws feedback. Some positive, some negative. This is a characteristic of human nature as much as it speaks of the product or service being discussed.Quite often, an initial response is negative but this morphs in to positivity as the change becomes less of a stumbling block and acceptance is gained.

For example, the LED streetlighting installed in Maidenhead recently has caused a divided reaction. Sadly, in today’s culture negatives can make more headlines than positives. We’ve looked at LED’s positives and why there are sometimes issues perceived after installation.

LED positives:

  • Low energy consumption.
  • High performance.
  • Substantially lower costs.
  • Carbon Trust accreditation for eligible products/suppliers.
  • Clarity of lighting.
  • Increased safety, productivity and confidence. 

LED negatives to address:

Some of the residents in Maidenhead’s neighbourhoods in which LED streetlighting has been installed have questioned the effect on health and made requests to the local authority for lights to be dimmed. One resident approached the British Medical Association, who don’t have a LED streetlighting policy in place.

She was considering the American Medical Association’s report issued in June 2017. Their policy statement confirmed that the AMA is in favour of LED streetlighting but recommends that cooler colour temperatures are utilised, of 3000K (Kelvin) or lower.

It should be remembered that research is often undertaken to substantiate a claim or to meet criteria and so we must also take notice of research that has proven the higher colour temperatures, 5500-6000K, have significantly increased vision and therefore safety in tests. Residential areas in the UK already have 3000K-4500K streetlighting solutions in place.

The beam angle is a critical factor and the ability to schedule or dim lighting remotely decreases the likelihood of negative feedback.

The Maidenhead Advertiser found no basis to safety concerns as they worked on their article.

Meanwhile, another resident in the area was thrilled about the adoption of LED streetlighting and hosted a party to celebrate. The removal of the old lights which streamed in to her bedroom and the replacement with LED lighting directed to the ground has been viewed as a vast improvement.  

What do the colour temperatures mean?

Think about appearance to us rather than brightness levels.

CT - colour temperature - is a measurement of the spectral content of light from a source - how much blue, green, yellow and red are present.

The CCT - correlated colour temperature - alters the spectral content to the colour sensitivity of human vision.

High cost and energy consuming incandescent bulbs have a colour temperature of 2400K. These lights possess more yellow and red than blue light.

The Circadian Principle states that when humans see blue light the central nervous system is stimulated. A high CT means that there is greater blue content and the whiter that the light appears to us.

LED by Vision’s Stratus LED streetlighting is available from 35W to 230W and has three colour temperature options.

To learn more about effective, efficient LED streetlighting please contact us, we’ll be delighted to share the positives and refute any negatives.

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