Inrix's analysis reveals a striking trend: Traffic congestion has decreased profoundly across the country.

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Tablets are a prime example of this trend generating traffic levels that will grow 62-fold from 2011 to 2016 -- the highest growth rate of any device category tracked in the forecast.

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But the wrecks mask a broader improvement: Overall traffic fatalities have been dropping in a "historic downward trend, " according to the National Highway Traffic Safety Administration.

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The same trend is also changing traffic patterns.

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Trend 5: offloading traffic from mobile to fixed.

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The best incentive to encourage such a trend, in addition to air traffic control reform, is slashing the capital gains tax.

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Trend 2: Growth in data traffic per device.

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Global passenger traffic has risen by 6%, faster than the long-term trend.

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We expect this trend to continue aided by growth in e-commerce and stabilizing customer traffic.

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Mr. Sitt hopes the trend will continue and even extend south of 42nd Street, which gets much less foot traffic.

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