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• Manual Table 4, the design process is an iterative one. A tentative design is conceived and then evaluated in terms of both the pavement luminance criteria and the STV. If the design, in terms of either criteria, is deficient then all or part of the design must be modified to correct the deficiencies. STV and average pavement luminances are minimums and both must be met or exceeded; exceeding one set of criteria does not permit reduction of the other. Pavement luminance uniformity should not be exceeded. If the design exceeds both the visibility and the pavement luminance criteria then the design may be modified (to reduce costs), or accepted depending on the judgment of the designer as to energy usage, aesthetics or other relevant consideration. The criteria values F6 The Iterative Design Procedure The use of computer programs to quickly evaluate a tentative design makes the use of the iterative design procedure simple. Under this procedure the initial tentative desi

Manual Table 4, the design process is an iterative one. A tentative design is conceived and then evaluated in terms of both the pavement luminance criteria and the STV. If the design, in terms of either criteria, is deficient then all or part of the design must be modified to correct the deficiencies. STV and average pavement luminances are minimums and both must be met or exceeded; exceeding one set of criteria does not permit reduction of the other. Pavement luminance uniformity should not be exceeded. If the design exceeds both the visibility and the pavement luminance criteria then the design may be modified (to reduce costs), or accepted depending on the judgment of the designer as to energy usage, aesthetics or other relevant consideration. The criteria values F6 The Iterative Design Procedure The use of computer programs to quickly evaluate a tentative design makes the use of the iterative design procedure simple. Under this procedure the initial tentative desi

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