Councils outside Brisbane have attempted, but had rejected on business grounds, a dark-sky friendly public-space and street lighting plan.

If you live outside Brisbane please write to your local representatives as per the letter below, AND write to Brisbane regional representatives as per the letter on the Light Pollution page.

 

Dear xxxxxxx

I express my support to your organisation in attempting to implement a smart, dark sky friendly outdoor lighting plan for your region, as promoted in the Smart Street Lighting Feasibility Report by the Council of Mayors, South East Queensland, November 2016. 

Not only is this plan capable of delivering a far more energy efficient outdoor lighting grid than what we already have, it will protect our night skies from unnecessary light pollution.  Light-pollution free skies are a rare commodity in the developed world are appreciated by many who live in the region and sort after by many tourists who visit Australia.

The report is based on The Sunshine Coast Urban Lighting Master Plan, which has been scientifically evaluated by a member of the Brisbane Astronomical Society as a world’s best practice plan. It encompasses the three vital elements of minimally polluting outdoor lighting, namely shielding light so that it only goes down, dimming technology and the minimization of blue light through use of luminaires not above 3000K. The full requirements to achieve an efficient minimally light polluting outdoor lighting scheme are attached in the appendix for your technical staff.

I am frustrated to hear that it has been rejected on business grounds by Energy Queensland and the Queensland Government. I support the belief there is a fundamental conflict of interest where the organization that determines what streetlights may be used also profits from the electricity that they consume.

I urge you to keep working towards the implementation of the plan as being good for our community and the night skies of South East Queensland.  

Yours faithfully

xxxxxxxxxxx

 

Appendix

To address the particular characteristics of LED street lights that can negatively impact resident’s quality of life, streetscape ambiance and road safety, the following recommendations are made when selecting LED luminaires for installation by your authority.

Recommendation 1:  LED streetlight luminaires, for category V and P roadways and public spaces, must not exceed a correlated colour temperature of 3000K. (Note this complies with Australian Standards, which only specify a higher Kelvin rating for pedestrian crossings).

Recommendation 2:  That LED street light luminaires selected for deployment be certified by the International Dark-Sky Association for a Fixture Seal of Approval to minimise the negative impact of inappropriate street lighting on residents and the night sky of South-East Queensland.

Recommendation 3:  For Category V roadways LED luminaires must be of full cut-off design and emit less than 10% of their total luminance in the 800 to 900 glare-zone.

Recommendation 4:  For Category P roadways and public spaces LED luminaires must be shielded to at least the 800 level to reduce glare from the LED array.

Recommendation 5:  Streetlight LED luminaires on category V and P roadways must always be installed horizontally with zero upcast tilt.

Recommendation 6:  Luminaires must deliver a well-controlled light distribution that does not contribute to light trespass behind or forward of the luminaire on to private property.

Recommendation 7:  Streetlight luminaire designs must allow easy attachment of post-installation light shields to address any light trespass or glare complaints by nearby residents.

Recommendation 8:  Streetlight LED luminaires must not deliver a total luminous flux or target area illuminance in excess of the minimum level required for the lighting purpose. 

Recommendation 9:  For category P roadways and public spaces LED luminaires must be controlled by adaptive management systems that reduce power consumption when full illumination is not required and respond when triggered by movement of pedestrians, cyclists and cars. 

 

I bring to your attention the fact that multiple overseas cities have well demonstrated the implications of poor decision-making in the selection and installation of LED luminaires, for example:  Davis, California; Phoenix, Arizona; Lake Worth, Florida; New York, New York; Chicago, Illinois and others.  You should be aware of the public backlash and expense these authorities suffered from deploying high-glare and poorly shielded 4000K LED street lighting.  My hope is that your organisation will learn from these overseas mistakes and not repeat them here.