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21
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22Published 1994Government Document Book
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23
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24
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25
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26Published 2001Government Document Book
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27
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28Published 2005Government Document Book
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29
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30Published 2007Government Document Book
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31
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32Published 2008Government Document Book
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33
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34Published 2009Government Document Book
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35by Bonneson, James A.Connect to the full text of this online report (Texas Transportation Institute)
Published 2008
Connect to the full text of this online report (UC-Berkeley)
Government Document eBook -
36by Zhou, FujieConnect to the full text of this online report (Texas Transportation Institute)
Published 2008
Connect to the full text of this online report (UC-Berkeley)
Government Document eBook -
37
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38Published 2010Government Document Book
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39
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40