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June 30, 2016
The Road to the
LED Roadway
Lighting
Specification.
Presented to:
VASITE Annual Business Meeting and Technical
Conference
Who Am I …and why am I here
Randy Boice, PEVice President, JMT
Traffic Engineering Lead for VA, NC, SC,
TX and FL
ITS Lead for Entire Corporation
Lighting Experience
• I-95 Corridor
• Primary and secondary corridors
• Park and Ride Lots
• Roundabouts
Overview
LED Lighting Evaluation Championed
and Coordinated by Mansour Mahban
• State Electrical Engineer
• $191,885 Study Funded by VDOT Traffic
Engineering Division
• Leads the Evaluation of LED and Related
Electrical Components Statewide
• Initiatives Include:
▪ Reduce Maintenance costs
▪ Improve Energy Consumption
Who knows lighting terminology?
Audience Participation Time!!!
Glare Illuminance Uniformity
Ratio
Color
Temperature
Uniformity Ratio
• Average/Minimum
Illuminance
• Total light on the surface
Luminance
• Total light reflected from
the surface
Glare
Color Rendering/
Temperature
General Terminology…or Roadway Lighting 101
Why LED
Roadway Lighting?
Why LED
Roadway Lighting?
Not that easy….• Many Providers
• Many Ways to Distribute Light
• Many Color Rendering Mechanisms
• Many Power Sources
• Many <insert descriptor here>
Why Not Just Switch them Out?
Horizontal IlluminanceDifferent Manufacturers = Different Ways to Distribute the Light
Health Concerns
VDOT• Mansour Mahban
• Adam Dixon
• Jon Sayyar
VDOT VTRC• Benjamin Cottrell
VTTI• Ronald Gibbons
JMT• Randy Boice
Roadway Lighting StudyCollaborative effort
Measure Light Source Performance Over Time• Overall Light Output
• Light Loss Factor
• Average Light Output
• Overall Distribution Changes
• Color Changes
• Temperature Issues
• Visual Inspection
• Water Issues
• Animal Intrusion
• Dirt Build Up
Study Approach
Telegraph Road Park and Ride• JMT Designing Parking Lot and Roadway Lighting
Need A Place to LightRelationships pay off…
Luminaires for Testing
25 White LEDs from 5 manufacturers
Test Bed Development
Test Bed
Development
Laboratory Testing
Focus on Illumination and Integrity of LED
Luminaires• Testing and Evaluation every 3 months for 24 months
Overall Testing
Focus on Illumination and Integrity of LED
Luminaires• Testing and Evaluation every 3 months for 24 months
• Measured depreciation of output between fixtures
• Evaluated overall operation over time
• Evaluated maintenance needs over time
Overall Testing
Results
(Driver)
Results
Results
Other Observations
Developing Specifications Based on Testing and Evaluations
VDOT TED developed 2 Special Provisions
Developing Specifications Based on Testing and Evaluations
Includes strength and construction criteria
Developing Specifications Based on Testing and Evaluations
Includes service life and operating temperature
ratings
Developing Specifications Based on Testing and Evaluations
Includes photometric performance criteria
Photometric Controls• 7-Pin Connection (vs old 3-Pin)
• Allows for
• Dimming
• Motion Sensing
• Power Monitoring
• 2-way Communications
Next StepsNew Technologies, New Methods of Maintaining
So What?• Automatic Diagnostics
• Up to 30% More Savings
• Asset Management (GPS/GIS)
• Fixture Troubleshooting
• Power Meter
• Adaptive Control
• Optional Camera
• Optional Motion Detection
• Optional Gunshot Location
Detection
Next StepsNew Technologies, New Methods of Maintaining
Testing in Hampton Roads to Begin July, 2016
VDOT• Mansour Mahban
• Jon Sayyar
Both Instrumental in helping
to get this presentation
together!
Special Acknowledgements
Questions?