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and protective purposes, and from industrial processes, <br /> whether interior or exterior, but not including street <br /> or highway lights, only when and to the extent that it <br /> is necessary to vary from such requirements in order to <br /> achieve and maintain maximum efficiency; but only with <br /> the written approval of the ~.~inth Regional Civilian De- <br /> fense Board, obtained in advance. <br /> <br /> (c) TRAFFIC SIGNS XND ~ICI~LS. Ill~inated signs and <br />signals which are authorized or mainzained by govermnental author- <br />ity for the purpose of controlling or directing street or highway <br />traffic shall be shielded so that no direct rays frown the light <br />source are emitted above the horizontal in respect to li[Zhts mount- <br />ed ten feet or more above the ground, or above an angle or more <br />than six degrees above the horizontal in respect to li~'Jhts mount- <br />ed less than ten but more than three feet above the ground, or <br />above an angle of more than twelve degrees above the horizontal <br />in respect to lights mounted less than three feet above the ground. <br />Relative variations in the upward limit of light are permissible <br />to compensate for grades. <br /> <br /> (d) i'~[~WIG~iTION AND R~ILR0~iD LIO~S. Authorized li~Zhts <br />necessary to facilitate air or water navigation, authorized rail- <br />road signal li~Ehts, and headli~hts of railroad locomotives when in <br />motion, are hereby excepted from all the provisions of this proc- <br />lamat 1 o n. <br /> <br /> 3. In addition to the restrictions hereinbefore im- <br />posed, illrumination within that part of the Zone of i~estricted <br />Lig~.jhting which is visible from the sea, as hereinafter defined, <br />shall be further diminished or obscured at all times at night from <br />sunset to sunrise, as follows: <br /> <br /> (a) S~R'~''',,'~ 711GH,;~AY ~l~)~'~i,~FIC LI(]-i~S Street and <br />highway lights, and illuminated signs (but not signals) which are <br />authorized or maintained bZ~ [~overmental authority for the purpose <br />of controllin~ or directing street or highway traffic and which <br />are visible from the sea, shall be so shielded that they are not <br />visible from the sea at ni~ht and so that no direct raF-s from the <br />li4~ht source a~re emitted above the horizontal. <br /> <br /> ( b ) iiSSi D~.{i~TI~L, C0i,2.]ROIAL <br />2,lo li{{hting shall be permitted behind windows or ~lazed doors <br />visible from the sea unle. ss theF are covered bF drapes or shades. <br /> <br /> ( c ) ~STREET :,~.:S'D i{llO&i~'AY ?RAFFIC. u~ithin areas visible <br />from the sea, but subject to the exceptions hereinafter stated, <br />voi~icles shall operate at ;~i'~ht with no more than two lil3hted <br />drlvin~f~l la~nps, re?ardless el' the direction of travel, ~:~nd each such <br />lazup shall pa:'ovide a maxim~a of not more than 250 be~ candlepower. <br />T.ior;~;al rear liUhts, license plate li~.llhts and clearance li~;.".hts <br />(where rec!uired by law) are L:.enz~itted. Vehicles which are classi- <br />fied as cuthorized emer~3enc}: vehicles under the applicable ffederal, <br />Stare or local taw, when operated b}~ authorized p,~rsonnel, and when <br /> . and when resoondino, to a <br />displayin~ an ill~inated red sootii.~fi'it, <br />fire alarm, or when in the i~anediate pursuit of an actual or sus- <br />pected violator of blae lav~, or .'.']~en ~join~ to or 'tm'ansZ~ortin~J a <br />person who is in a~oparent need of i~m~ediate~nerq~]enc~~ medical or <br />suryiZicaicare, or ~h~:~n respondin:-' to sozne oth~r emergent3~ involv- <br /> . shall be exceotod from <br />index tV!u~ protection el' life or propert~, <br />ti~e foro~join[5 provision. <br /> <br /> - 3 - <br /> <br /> <br />