541 | Add to Reading ListSource URL: www.thetbwg.orgLanguage: English - Date: 2003-06-23 14:03:14
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542 | Add to Reading ListSource URL: stc.utk.eduLanguage: English - Date: 2009-10-02 13:32:00
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543 | Add to Reading ListSource URL: www.its.washington.eduLanguage: English - Date: 2002-02-07 14:58:41
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544 | Add to Reading ListSource URL: www.ops.fhwa.dot.govLanguage: English - Date: 2004-11-04 10:06:31
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545 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 1998-04-09 13:06:26
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546 | Add to Reading ListSource URL: onlinepubs.trb.orgLanguage: English - Date: 2011-06-30 10:10:54
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547 | Add to Reading ListSource URL: www.intrans.iastate.eduLanguage: English - Date: 2012-09-12 08:22:36
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548 | Add to Reading ListSource URL: www.dot.state.sc.usLanguage: English - Date: 2012-04-25 11:28:01
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549 | Add to Reading ListSource URL: www.dot.state.fl.usLanguage: English - Date: 2014-02-03 11:48:59
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550 | Add to Reading ListSource URL: www.dot.state.mn.usLanguage: English - Date: 2010-02-01 11:35:01
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