respect to transportation for hire by motor vehicles in the Washington Metropolitan District, did not revoke by implication or supersede the authority of the Secretary of the Interior to promulgate reasonable regulations with respect to administration and use of the George Washington Memorial Parkway.
(5) The issuance of a certificate of public convenience and necessity by the WMATC authorizing a route over the George Washington Memorial Parkway is not in itself sufficient to permit operations on the Parkway. Use of the Parkway pursuant to such certificate is conditioned upon compliance with reasonable regulations promulgated by the Secretary of the Interior regarding such use and it is also conditioned upon the reasonable exercise of discretion by the Secretary of the Interior through the National Park Service in issuing permits for such use according to such reasonable regulations.
(6) The National Park Service Regulations promulgated by the Secretary of the Interior are unreasonable, arbitrary, capricious, discriminatory, and therefore invalid, insofar as they do not permit suburban commuter buses owned by W.V. & M. and D.C. Transit to operate without limitation on the Parkway above the Key Bridge including the Spout Run section pursuant to their certificates from the WMATC. The regulations are unreasonable, arbitrary, capricious, discriminatory and therefore invalid insofar as, and so long as, other regulations do permit suburban commuter buses owned by other bus companies to operate without limitation on the Parkway below the Arlington Memorial Bridge.
(7) To the extent that the Park Service Regulations are unreasonable, arbitray, capricious, discriminatory, and therefore invalid, by allowing commuter buses to operate on the southern part of the Parkway but not on the portions above the Key Bridge, so, too, is any refusal of the Secretary of the Interior or any of his delegates, to issue permits to W.V. & M. and D.C. Transit for unlimited access to the Parkway above Key Bridge basing such refusal on such unreasonable, arbitrary, capricious, discriminatory, and invalid regulations.
(8) The claim of the United States in Civil Action No. 1172-63 for injunctive relief against W.V. & M. will be denied, and the claims of W.V. & M. and D.C. Transit seeking a declaration of invalidity as to the regulations which deny their suburban commuter buses unlimited access to the Parkway north of Key Bridge will be granted because such regulations are invalid and will be invalid so long as they remain unreasonably discriminatory by allowing commuter buses unlimited access to the Parkway below Arlington Memorial Bridge while denying unlimited commuter bus use of the Parkway above the Key Bridge.
(9) The National Park Service Regulations promulgated by the Secretary of the Interior which do not permit any suburban commuter buses to use that section of the Parkway between the Arlington Memorial Bridge and the Key Bridge are reasonable and valid because of structural weakness and maintenance problems, but only so long as all buses, including sightseeing buses and airport buses (not including limousines), are similarly denied access. Accordingly, the claims of W.V. & M. seeking a declaration of invalidity as to the regulations which deny its suburban commuter buses any access to this portion of the Parkway will be denied.
(10) All parties shall bear their own costs.