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accidents at highway agencies authorized amended American Railroads American Toll Bridge apply approved AUGUSTINE LONERGAN bill bridges over navigable Bureau of Public Bureau of Safety Chief of Engineers class I railroads comply Congress crossings and drawbridges danger of accidents departments and agencies designated annually establish a National Federal departments Fletcher GERRITY highway grade crossings highway railway highway safety highway-railway crossings incorporated in bridge installed Interstate Commerce Commission Interstate Commerce Committee investigation LANGLEY LOVELL matter ment MILLER mittee movable spans incorporated National Safety Standards navigable streams problem promotion of safety protective devices provides Public Roads purpose railroad grade crossings railroads and drawbridges reduce the danger regulations representative safety appliances safety devices safety gates safety or protective Safety Standards Commission Secretary of Agriculture Senator Lonergan Senator MOORE Senator SCHWARTZ signals standards in connection subcommittee Tacony-Palmyra Bridge tion Toll Bridge Association traffic United States Senate various systems Washington