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