living through the dark side of asphalt...
TRANSCRIPT
![Page 1: Living Through The Dark Side Of Asphalt Pavingconferences.illinois.edu/bituminous/PDFs2004/HalWakefield.pdf · Traffic Growth 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0 1970](https://reader033.vdocuments.site/reader033/viewer/2022060603/60576f65c186140e36416eff/html5/thumbnails/1.jpg)
Living Through The Dark Side Of Asphalt Paving
Bituminous Paving Conference
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How many like night?
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What you see
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Whats out there
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Guide Light
• Background• Recommendations • New technology• Your help
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Wacker Drive
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Fixed Lighting
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Urban
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Paving in Rural area
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Equipment
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Quality
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Visual Clues
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Dark
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Why in the Dark
• Minimizes disruption to traffic• Reduces delay and accidents• A great advantage of asphalt paving
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System in need
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The only alternative
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Traffic Congestion
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Rear Ends
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Reduced Congestion
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8 '10 12 2 4 6 8 10 12 2 4 6AM PM
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Traff ic Grow th
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1970 1975 1980 1985 1990 1995 2000 2005
YEAR
Growth
Interstate Traffic Growth
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Research Advantages
• Material delivery• Effect on surrounding businesses• Minimize pollution• Safety
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Safety
• Lower levels of traffic• However….
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Tired Driver
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Steam
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Drunk driver
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Specs
• IDOT specifications 701.04(c)6: The flagger station shall be lit by additional overhead lighting other than street lights
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Flagger
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Dangerous Job
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Useful?
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Building a Specification
• Radiance- how much energy is involved
• Illuminance- the result
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Illuminance
• Birthday cake candle• On one end of a one-foot ruler• One foot candle• In metric, one lux
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Seven Candles
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Seven Feet
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Measureable
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Shedding a Little Light
• NCHRP 476 in 2002• NCHRP 498 in 2003• Il Trans Research Cooperative in 2002• Others
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Other States At Paving SiteFoot-candles
10Oregon10NY10Miss10Mich5Md5Florida5 Calif
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Light for worker
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Workers
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Workers at night
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Night Office
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Specification
• Draft specification under development • Follows national guidelines • Oriented toward worker needs• Bureau of Design ( Mark Seppelt)
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Glare
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Background Light
• Less adjustment for driver• Enough light to keep sanity • Difficult to achieve• Driver aware of workers
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Retroflectivity
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Dark
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Yellow Flasing Light
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2 foot candles
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Give em a chance
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Background Light
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Recommendations
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Recommendations
• Pay attention to problem jobs• Press for lighting specification• Personal actions
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Rural
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Personal Actions
• Vests clean• Hat and arm band• Use common sense
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Balloon Lighting
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Images in Illumination
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500 Watt Balloon
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Flagger in the dark
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Flagger
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Conventional
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Generator
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Summary
• Dark is dangerous• Take every possible personal precaution• Press for lighting spec
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Its Up to Us
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Vest at night