Centerline marking specification includes the values 100 ft minimum, 50 ft maximum, and 60 ft blank spaces.

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Centerline markings are defined by precise distances that determine the dash lengths, the gaps between them, and any blank stretches. The statement lists 100 ft minimum, 50 ft maximum, and 60 ft blank spaces, and in the material you’re studying these exact figures are part of the centerline marking specification. Because those numbers are indeed specified in the standard, the assertion is true. The key idea is that the pattern and spacing of centerline markings are governed by explicit values, so matching those figures indicates you’ve correctly recalled the spec. If you encounter other values in different contexts or jurisdictions, remember standards can vary, but for this material these three figures are the ones you need to memorize.