61 STAT.] 80TH CONG., 1ST SESS.-CH. 324-JULY 25, 1947 education without reference to any other law; $15,000 for expense necessary for the preparation of studies, preliminary plans and sur- veys, estimates and investigation for a system of centralized control of the traffic signal system, including temporary services as author- ized by section 15 of Act of August 2, 1946, Public Law 600; and for all expenses necessary in carrying out the provisions of the District of Columbia Motor Vehicle Parking Facility Act of 1942, approved February 16, 1942 (56 Stat. 90), including personal services (except a director) and printing and binding; $741,400: Provided, That no part of this or any other appropriation contained in this Act shall be expended for building, installing, and maintaining streetcar load- ing platforms and lights of any description employed to distinguish same, except that a permanent type of platform may be constructed from appropriations contained in this Act for street improvements when plans and locations thereof are approved by the Public Utilities Commission and the Director of Vehicles and Traffic: Pro- vided further, That the street-railway company shall after construc- tion maintain, mark, and light the same at its expense: Provided further, That fees from parking meters shall be deposited to the credit of the highway fund: Provided further, That the Commis- sioners are authorized and directed to designate, reserve, and prop- erly mark appropriate and sufficient parking spaces on the streets adjacent to all public buildings in the District for the use of Mem- bers of Congress engaged on public business: Provided further, That the incumbent on July 1, 1944, of the authorized position of Regis- trar of Titles and Tags, whose duties shall be as prescribed in the District of Columbia Appropriation Act, 1945, shall hereafter be continued for compensation purposes in grade 9 of the clerical, administrative, and fiscal service under the Classification Act of 1923, as amended. Division of Trees and Parking (payable from highway fund) : For necessary expenses for the Division of Trees and Parking, $190,000. Reimbursement of other appropriations (payable from highway fund): There are hereby authorized to be paid from the highway fund to other appropriations for the District of Columbia the following sums: $9,775 to "General administration" (Office of Corporation Counsel); $25,708 to "Fiscal service" (Collector's Office, $8,463; Auditor's Office, $12,720; Purchasing Division, $4,525); $4,000 to "Salaries and expenses, Office of Chief Clerk"; $8,797 to "Operating expenses. Office of Superintendent of District Buildings"; $2,028 to "Operating expenses, Electrical Division"; $924,692 to "Metropolitan Police"; and $25,000 to "National Capital Parks"; in all, $1,000,000. Refunding erroneous collections (payable from highway fund): To enable the Commissioners to refund collections erroneously covered into the Treasury during the present and past three fiscal years to the credit of the highway fund, $1,500: Provided, That this appropriation shall not be available for refunds authorized by section 10 of the Act of April 23,1924. Operating expenses, Refuse Division: For expenses necessary for collection and disposal of refuse and street cleaning, including repair and maintenance of plants, buildings, and grounds; and fencing of public and private property designated by the Commissioners as public dumps; $3,178.000: Provided, That this appropriation shall not be available for collecting ashes or miscellaneous refuse from hotels and places of business or from apartment houses of four or more apartments having a central heating system, or from any building or connected group of buildings operated as a rooming, boarding, or lodging house having a total of more than twenty-five rooms. 443 60 Stat. 810. 5U.S.C.§55a. D. C . Code, Supp. V, §§40-801 to 40-809. Streetcar loading platforms. Fees from parking meters. Parking spaces for Members ofCongress. 58 Stat. 527. D. C . Code, Supp. V, I 40-603a. 42 Stat. 1488 . 5U.S.C.§661et seq. Ante, p. 244 . Ante, p. 425 . 43 Stat. 108. D. C. Code§ 47- 1910. Ante, p. 359. Ante, p. 244.