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Automated Highway System (AHS) Intelligent Vehicle Initiative (IVI) Vehicle Infrastructure Integration (VII)
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AHS – The Vision
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Removal of human error from the task of driving –Efficiency improvements (increased flow) –Safety improvements (decreased accidents) –Environmental improvements (decreased fuel use and emissions)
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AHS – The Vision (California Style) Dedicated AHS lanes Cars following in closely spaced platoons Automated merging / diverging Increased lane capacity x 2
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AHS – The Vision HOW? –Technology to allow removal of reaction time and distance –Decrease in following distance = increase in capacity –Safety maintained by technology Internal platoons = low speed differential crashes Space between platoons = decrease in severity of crash between platoons
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AHS Platooning Concept AHS Lane Regular Lane
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AHS – The Technology Automated Check-in Automated Check-out Lateral and Longitudinal Controls Malfunction Management and Analysis Commercial (& transit) Vehicle Needs Deployment Issues
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San Diego Tests Mandated by Congress Took place in San Diego in 1997 on a barrier separated HOV lane Systems built by Automated Highway Systems Consortium –A partnership between government / universities / car companies
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San Diego Test Results –AHS is feasible –AHS is not currently practical –Various AHS technologies are marketable –AHS technologies have significant positive safety implications
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Intelligent Vehicle Initiative The result of the AHS Findings Very heavy safety orientation Use new technology on roadside and in vehicles to make roadways safer
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IVI Technologies Human factors is a big deal –Do people trust the technology –Will people over-compensate for the technology (or misunderstand its capabilities) ABS 4-wheel drive in the snow
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IVI Technology Deployment is a big issue –Public infrastructure versus private system Chicken and egg problem
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VII To help make IVI technologies work better we need intelligence in the road as well as in the vehicle
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VII Chicken and egg problem: –What gets built / deployed first? How does the public pay for the purchase, installation, and operation of the public’s portion of the infrastructure?
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