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The following discusses how the National ITS Architecture provides the transportation service described by this service package. Each numbered item describes the operation of that portion of the service package identified with the corresponding number on the transaction set diagram.
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The physical presence of potential obstacles and basic vehicle measures (e.g. speed, acceleration in all 6 degrees of freedom) are combined to identify conditions where a collision is likely, and to then deploy vehicle restraints (e.g. pre-tension safety belts) in advance of the collision.
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The VS will also exchange vehicle safety data with other equipped vehicles within the range of the Vehicle-Vehicle Communications. VS will use this information to help calculate probability of a collision and deterimine the need to deploy any pre-crash restraints.
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