research advisory committee annual meeting fhwa briefing michael trentacoste associated...
TRANSCRIPT
![Page 1: Research Advisory Committee Annual Meeting FHWA Briefing Michael Trentacoste Associated Administrator Research, Development, & Technology Director, Turner](https://reader035.vdocuments.net/reader035/viewer/2022062409/56649ccf5503460f9499aa25/html5/thumbnails/1.jpg)
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Research Advisory Committee Annual Meeting
FHWA Briefing
Michael TrentacosteAssociated Administrator
Research, Development, & TechnologyDirector, Turner Fairbank Highway
Research Center
July 27, 2010
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Agenda:
• Update on FHWA Topics• RAC Member Questions• Every Day Counts Initiative
• Accelerated Project Delivery• Technologies & Innovations
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EVERY DAY COUNTS TECHNOLOGY INITIATIVE
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WHY? How long does it take to deploy
innovation in the transportation industry?• Change a business practice• Replace a design system• Replace a construction process…2 YEARS?
5 YEARS?
20+ YEARS?
10 YEARS?
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WHAT ARE THE INNOVATIONS?
Warm Mix Asphalt
Precast Bridge Elements
Geosynthetic Reinforced Soil
Safety Edge
Adaptive Traffic Control Technology
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TECHNOLOGY & INNOVATION
Allows a reduction in asphalt mixture production & placement temperatures
Benefits: Provides better compactionReduce worker fatigueReduces fossil fuel consumptionReduces CO2 & other emissionsLonger paving seasonAllows for longer hauling distancesBenefits with High RAP
Warm Mix Asphalt
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WARM MIX ASPHALT
Various technologies are used, which allows the plant mix to be produced and compacted at lower temperatures…
Typical production temperature reduction 30 to 75ºF
WMA Technologies:• Foaming Processes• Wax-like Additives• Chemical Additives• Hybrids
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TECHNOLOGY & INNOVATION
Prefabricated bridge elements and systems manufactured on-site or off-site, under controlled conditions, and brought to the job location ready to install
Benefits: Minimizes traffic & community impactImproves construction zone safetyImproves bridge designs
constructabilityIncreases quality &
lowers life-cycle costs
Prefabricated Bridge Elements & Systems
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TECHNOLOGY & INNOVATION
Fast, cost-effective bridge support method using alternating layers of compacted fill and sheets of geotextile reinforcement to provide bridge support.
Benefits: Eliminates approach slab or construction
joint at the bridge-to-road interfaceReduced construction time (complete in10 days)25 - 60 % less cost depending on standard of
constructionLess dependent on weather conditionsFlexible design – easily modified for unforeseen
site conditionsEasier to maintain because of fewer partsBuilt with common equipment and materials
Geosynthetic Reinforced Soil
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TECHNOLOGY & INNOVATION
Pavement edge beveled at a 30º angle which allows drivers a more controlled re-entry back onto the roadway after a tire drop-off, if the adjacent graded material settles or erodes
Benefits: Reduces crashes due to edge
drop-off and uncontrolled recoveryMinimal cost (less than 1% on
2-lane highway)Consolidated asphalt edge reduces
edge raveling, increases durability
Safety Edge
Drop-off mitigation immediatelyafter construction
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THE SAFETY EDGE
Re-grade to Pavement Level
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TECHNOLOGY & INNOVATION
ACS-Lite measures traffic flow and adjusts signal timing to promote smooth flow of traffic along arterial streets
Benefits: ACS-Lite improves travel
time reliability, reduces congestion, smoothes traffic flowIncreases long-term viability
of traffic signal operationsWidely deployable & uses
existing control equipment
Adaptive Traffic Control Technology
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TRAFFIC DEMAND, TOOLS AND TECHNOLOGY
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Thank You!
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