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2014 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. Topics AN ORIENTATION IMPORTANCE OF GOOD LIGHTING
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2014 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
Topics • AN ORIENTATION • IMPORTANCE OF GOOD LIGHTING • CREATING, ENACTING AND ENFORCING AN EFFECTIVE LIGHTING ORDINANCE
Good Lighting – An Orientation • Outdoor Lighting Trends • Good Lighting Defined • A Brief Case Study
Lighting TrendsLightpollution and billions of dollars of wasted energy
Lighting Trends York Pittsburgh You are here!
Lighting Trends LA Basin 103 Years Ago
Lighting Trends LA Basin 100 YEARS LATER
Lighting TrendsTypical Suburban Sky GlowKing of Prussia, Once Farmland
The US in 2025? The World at Night
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
WHAT IS GOOD LIGHTING? • The right amount of light: • Not too much or not too little for the seeing task • Legally defendable
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 Courtesy RAB Lighting
Sky glow blocks seeing stars Natural light from the stars SKY GLOW AIR POLLUTION AND MOISTURE PARTICLES HOME LIGHTING FLOODLIGHTS POSTTOPS PARKING LOTS Light pollution from below
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
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
SHIELDED “SHOEBOX” FIXTURES LIGHT AIMED STRAIGHT DOWN
STREET LIGHTS FULLY SHIELDED UNSHIELDED
PERIOD LIGHTING ACORNS SHIELDED UNSHIELDED
PERIOD LIGHTING Unshielded Acorns
WALL PACKS Shielded Unshielded 30
FLOODLIGHTS UNSHIELDED LIGHT GOES UP AND DOWN
Billboard & Sign Lighting Glare to Spare LED Sign Up-Lighted Billboard
SPORTS LIGHTING BAD AT BEST
Barn Light, aka Dusk-to-Dawn Light Barn Light POSTER CHILD FOR UNSHIELDED GLARE AND ENERGY WASTE KEEP THEM ON THE FARM
UNCONTROLLED GLARE Barn Light Some light even reaches the ground!
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. Motion Sensor Programmable Timer Midnight Off Photocell
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
WHAT’S NEXT • IMPORTANT LIGHTING ISSUES • Goals of good lighting • Lighting terminology • Lighting myths • Negative lighting impacts • Promoting quality lighting • Legal implications