¶ … percentage of days in which the highway had traffic was 3/20, or 0.15, or 15%. Thus, the average time that can be expected for the I-20 is (.15)(45) + (.85)(25) = 6.75 + 21.25 = 28 minutes.
The expected time on Shea Boulevard is 35 minutes, and this is consistent. Thus, during normal conditions it is faster on average to take the I-20. The total travel time for the month will be lower.
If in winter the odds of delays are 6/20 = 30%, then the situation might change. The expected average travel time would be: (.3)(45) + (.7)(25) = 13.5 + 17.5 = 31 minutes. The time on Shea Boulevard doesn't change. Thus, even in winter it is still faster...
Urban Studies Recently in Bridgeport, Connecticut, highway I95 looked like an inferno from Hades. A tractor-trailer carrying 9,000 gallons of fuel oil erupted in a spectacular fireball after striking a car. State police said the automobile apparently forced the tanker truck carrying 12,000 gallons of home heating oil into a concrete barrier on the southbound side. This section of the highway lies in the midst of Fairfield County, an extensive multi-town
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The driver was wearing a lap seat belt and he was killed. Would passenger restraints have prevented injuries to the 25 passengers that were hurt? The NTSB reported that "…because a properly worn lap belt limits the motion of the pelvis relative to the upper body," those passengers belted in may have been "…whipped sideways by lateral crash forces" (10). That whipping action might have resulted in "high forces
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