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Transportation-Analysis_CE_321

Transportation-Analysis_CE_321 - CE 321 Highway Design...

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CE 321 Highway Design Spring 2009
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2 Schedule Today, March 31/April 3 Safety Project Highway Design Analysis Report Outline Next Week (April 7/10) Overview of Plotting Sheets Project Working Day April 14/17 Semester Project Due!!
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3 Highway Design Analysis Requirements Discuss the following area wide transportation impacts that would result from each alternative Quantitative Earthwork Pavement Right-of-way Safety Qualitative (Subjective Assessment) User delay (Mobility) – Length Maximum grade Wildlife habitat impacts Impacts to streams
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Safety
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5 Hauer (1999) Substantive safety is the expected crash frequency and severity; Nominal safety is examined in reference to compliance with standards, warrants, guidelines and sanctioned design procedures.
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6 Hauer (1999) Roads designed to standards are not safe, not unsafe, nor are they appropriately safe Of two alternative highway designs connecting points A and B and serving the same traffic, that highway design which is likely to have fewer and less severe crashes is the safer one
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