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Transportation Research Circular, Issue E-C237, 95p
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Rail Safety IDEA Program Project Final Report, Issue 31, 35p
Transportation Research Circular, Issue E-C234, pp 64-86
Transportation Research Circular, Issue E-C234, pp 34-63
Transportation Research Circular, Issue E-C234, pp 21-33
Transportation Research Circular, Issue E-C234, pp 1-20
Transportation Research Circular, Issue E-C234, 94p
247p
NCHRP-IDEA Program Project Final Report, Issue 188, 42p
Issue 185, 37p
Transportation Research Circular, Issue E-C230, pp 1-12
TR News, Issue 314, pp 15-19
Transportation Research Circular, Issue E-C230, 57p
13p
NCHRP Research Topic Highlights, 8p
TR News, Issue 313, pp 30-35
25p
NCHRP Research Report, Issue 892, 111p
NCHRP Web-Only Document, Issue 257, 218p
NCHRP Research Report, Issue 858, 116p
ACRP Research Report, Issue 189, 103p
NCHRP Research Report, Issue 890, 211p
NCHRP Web-Only Document, Issue 246, 59p
NCHRP Research Report, Issue 880, 282p
NCHRP Research Report, Issue 881, 110p
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