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3 Enhancing Human Performance
9 Applying Engineering Society Standards in Transit 15 Implementing the Transportation Conformity Regulations 24 TRB Annual Meeting Highlights 42 Research Pays Off Longer Bridge Spans with Nebraska's NU I-Girders 2 Letters 44 Profiles 46 TRB Highlights CRP News, 47 48 Calendar 50 Bookshelf TR News (ISSN 0738-6826) is issued bimonthly by the Transportation Research Board, National Research Council, 2101 Constitution Avenue, N.W., Washington, D.C. 20418. Internet address: TRB.org. Printed in the United States of America. Editorial Correspondence: By mail to the Reports and Editorial Services Office at the address above, or telephone 202-334-2972, fax 202-334-3495. Subscriptions: North America: 1 year $52.00; single issue $9.00. Overseas: 1 year $65.00; single issue $12.00. Inquiries or communications concerning new subscriptions, subscription problems, or single-copy sales should be addressed to the Business Office at the address above, or telephone 202-334-3214, fax 202-334-2519. Second-class postage paid at Washington, D.C. Postmaster: Send changes of address to TR News, Transportation Research Board, 2101 Constitution Avenue, N.W., Washington, D.C. 20418. NOTICE: The opinions expressed in articles appearing in TR News are those
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