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From page 70... ...
ANNEX A Design Examples 71 Freeway Design Example Using AASHTO GL-7 and SSL Guideline 78 Street Design Example Using AASHTO GL-7 and SSL Guideline 70
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From page 71... ...
length o Curfews o Electric and lighting management systems o Conduct applicable studies o SSL considerations: Determine adaptive lighting technology Determine Smart city needs Selection of luminaires to meet goals Standardize O&M limitations Environmental sensitivity Step 2. Lighting Design Step 2a β Determine illuminance or luminance design.
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From page 72... ...
Example Result: Existing lighting locations in center median, new lighting system will utilize existing duct bank. Therefore, light pole locations will be in the center median.
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From page 73... ...
Step 2f β SSL consideration. Example Result: Project master plan requires SSL.
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From page 74... ...
Step 2h β Source color selection. Example Result: Based on the research provided in the SSL Guidance, a 4000K CCT LED source will be used.
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From page 75... ...
Step 4. Sky Glow, Trespass, Environmental Impacts Step 4a β Determine lighting zone.
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76ββ Solid-State Roadway Lighting Design FREEWAY PARAMETERS FREEWAY DESIGN
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From page 77... ...
Design Examplesββ 77Β Β FREEWAY LIGHTING CALCULATION
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From page 78... ...
length o Curfews o Electric and lighting management systems o Conduct applicable studies o SSL considerations: Determine adaptive lighting technology Determine Smart city needs Selection of luminaires to meet goals Standardize O&M limitations Environmental Sensitivity Step 2. Lighting Design Step 2a β Determine illuminance or luminance design.
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From page 79... ...
suggest that if the street is previously unlit, then a CMF of 0.72 can be used. Step 2d β Pole placement.
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From page 80... ...
Step 2f β SSL consideration. Example Results: Project master plan requires SSL.
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From page 81... ...
Lavg: Maintained average pavement luminance L min: Minimum pavement luminance Lmax: Maximum pavement luminance LV,max: Maximum veiling luminance Step 2h β Source color selection. Example Results: Based on the research provided in the SSL Guidance a 4000K CCT LED source will be used.
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From page 82... ...
Example Results: SSL specific maintenance factors are LDD = 0.9, LLD = 0.9, LATF = 1; then LLF = 0.81 Step 4. Sky Glow, Trespass, Environments Impacts Step 4a β Determine lighting zone.
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From page 83... ...
Design Examplesββ 83Β Β STREET PARAMETERS STREET DESIGN
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From page 84... ...
84ββ Solid-State Roadway Lighting Design STREET LIGHTING CALCULATION
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