PSATS ANNUAL CONFERENCE PROTECTING YOUR TOWNSHIP FROM UNDESIRABLE OUTDOOR LIGHTING Presented by: Barry Johnson and Stan Stubbe The Pennsylvania Outdoor Lighting Council PA Chapter of the International Dark-Sky Association

2Topics 1.AN ORIENTATION 2.IMPORTANCE OF GOOD LIGHTING 3.CREATING, ENACTING AND ENFORCING AN EFFECTIVE LIGHTING ORDINANCE

3 Good Lighting – An Orientation Outdoor Lighting Trends Good Lighting Defined A Brief Case Study

Lighting Trends Lighting Trends Light pollution and billions of dollars of wasted energy 4

Lighting Trends Pittsburgh York You are here!

6 Lighting Trends LA Basin 103 Years Ago

7 Lighting Trends LA Basin 100 YEARS LATER

8 Lighting Trends Lighting Trends Typical Suburban Sky Glow King of Prussia, Once Farmland

The World at Night 9 The US in 2025?

10 WHAT IS GOOD LIGHTING? Good lighting starts with: Using the right amount of light Placing the light only where needed and wanted Shielding the light source (bulb) from peoples’ view Shutting lights off when not needed

11 WHAT IS GOOD LIGHTING? The right amount of light: Not too much or not too little for the seeing task Legally defendable

12 WHAT IS GOOD LIGHTING? Good lighting means placing the light only where it is needed or is wanted, to prevent light trespass and sky glow. Courtesy RAB Lighting

13 Sky glow blocks seeing stars Natural light from the stars Light pollution from below FLOODLIGHTSPOSTTOPSPARKING LOTSHOME LIGHTING SKY GLOW AIR POLLUTION AND MOISTURE PARTICLES

14 WHAT IS GOOD LIGHTING? Good lighting aims and shields the source to prevent “glare.” “Glare is light that causes annoyance, discomfort or loss in visibility

15 WHAT IS GOOD LIGHTING? Good lighting shields the light source from view. Shielding blocks light from going where it doesn’t belong and covers the bulb from view. Unshielded Shielded

16

17 FULLY SHIELDED UNSHIELDED STREET LIGHTS

18 PERIOD LIGHTING SHIELDED UNSHIELDED ACORNS

19 PERIOD LIGHTING Unshielded Acorns

20 WALL PACKS Shielded Unshielded 30

21FLOODLIGHTS UNSHIELDED LIGHT GOES UP AND DOWN

22

Billboard & Sign Lighting 23 LED Sign Up-Lighted Billboard Glare to Spare

24

Barn Light 25 Barn Lightaka Dusk-to-Dawn Light Barn Light, aka Dusk-to-Dawn Light POSTER CHILD FOR UNSHIELDED GLARE AND ENERGY WASTE KEEP THEM ON THE FARM

26 UNCONTROLLED GLARE Barn Light Some light even reaches the ground!

27 WHAT IS GOOD LIGHTING? Lastly, good lighting is on only when needed It is to shut of at the close of business or when no one is watching to see what’s being lighted. Programmable Timer Motion Sensor Midnight Off Photocell

28 SUMMARY Bad lighting is on the rise Good lighting means: the right amount of light in the right place shielded & aimed down on only when needed. A good ordinance can make a big difference

29 WHAT’S NEXT IMPORTANT LIGHTING ISSUES Goals of good lighting Lighting terminology Lighting myths Negative lighting impacts Promoting quality lighting Legal implications