[56 STAT. PUBLIC LAWS-CH. 450 -JUNE 27, 1942 Printing and bind- ing. Road-making exper- iments. 23U.S.C.§48; 16 U.S.C. §503. the place where such services are employed, and such employees in emergencies may be entered on duty subject to confirmation by the Federal Works Administrator. PUBLIC ROADS ADMINISTRATION General administrative expenses: For the employment of persons and means, including rent, advertising (including advertising in the city of Washington for work to be performed in areas adjacent thereto), printing and binding (not to exceed $32,000), purchase (including exchange) of lawbooks, books of reference and periodicals, and the preparation, distribution, and display of exhibits, in the city of Washington and elsewhere for the purpose of conducting research and investigational studies, either independently or in cooperation with State highway departments or other agencies, including studies of highway administration, legislation, finance, economics, transport, construction, operation, maintenance, utilization, and safety, and of street and highway traffic control; investigations and experiments in the best methods of road making, especially by the use of local mate- rials; and studies of types of mechanical plants and appliances used for road building and maintenance, and of methods of road repair and maintenance suited to the needs of different localities- for main- tenance and repairs of experimental highways; for furnishing expert advice on these subjects; for collating, reporting, and illustrating the results of same; and for preparing, publishing, and distributing bul- letins and reports; to be paid from any moneys available from the administrative funds provided under the Act of July 11, 1916 (39 Stat. 355-359), as amended, or as otherwise provided. FEDERAL-AID HIGHWAY SYSTEM Construction of For carrying out the provisions of the Act entitled "An Act to ral post roads. provide that the United States shall aid the States in the construc- tion of rural post roads, and for other purposes", approved July 23 U. S. C.3 48; 11, 1916 (39 Stat. 355-359), and all Acts amendatory thereof and supplementary thereto, to be expended in accordance with the pro- visions of said Act, as amended, including not to exceed $1,135,000 for departmental personal services in the District of Columbia, $60,000,000, to be immediately available and to remain available until expended, which sum is composed of $20,000,000, which is the remainder of the amount authorized to be appropriated for the fiscal year 1941 by section 1 of the Act approved June 8, 1938 (52 Stat. 633), and $40,000,000, which is a part of the amount authorized to be appropriated for the fiscal year 1942 by section 1 of the Act Proiro. approved September 5, 1940 (54 Stat. 867): Provided, That none of onvict labor. the money herein appropriated shall be paid to any State on account of any project on which convict labor shall be employed, except this provision shall not apply to convict labor performed by convicts on Vehicles. parole or probation: Provided further, That not to exceed $55,000 of the funds provided for carrying out the provisions of the Federal 42 stat. 217, 218. Highway Act of November 9, 1921 (23 U. S . C. 21, 23), shall be available for the purchase of motor-propelled passenger-carrying vehicles necessary for carrying out the provisions of said Act, includ- ing the replacement of not to exceed one such vehicle for the use of the Commissioner, Public Roads Administration, at a cost, includin the exchange value of the vehicle to be replaced, of not to exceed Depreciation on $1,200: Provided further, That, during the fiscal year 1943, whenever performing authorized engineering or other services in connection with the survey, construction, and maintenance, or improvement of roads for other Government agencies the charge for such services 408
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