The streetlights we have installed are designed for the local environment they are placed in to try and ensure the right light on the road whilst minimising glare.
Public Health England’s report concluded that “to damage your eyesight you would need to be less than 2 metres away from the lantern and stare at it steadily for 2.5 hours”.
The European Commission Report – SCHEER (scientific committee on Health, Environment and emerging risks) concluded that there is no evidence of direct adverse health effects from LEDs emission in normal use (lamps and displays) by the general healthy population.
The Lighting Research Centre concludes that LED’s present no special concerns for the blue-light hazard over some other common sources in typical use cases because photophobic responses limit exposure to bright sources.
The above reports show that street lighting should not have an adverse effect on people’s circadian (daily sleeping and waking) rhythm. It might be noted that office and home lighting and the use of laptops and mobile phones is somewhat more likely to have an adverse effect.