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2009 Edition Page 725 <br />Figure 6H-46.Work in the Vicinity of a Grade Crossing (TA-46) <br />(Modified) <br />Boring B-16-MKA-02 <br />DO NOTSTOP.N <br />TRACKS <br />1Extended buffer space <br />• <br />• <br />• <br />I <br />."50 to 100ftt <br />• <br />• <br />l t <br />S)lJVlllN. <br />dOIS <br />lON 00i50ft1 <br />Note:See Tables 6H-2 and <br />6H-3 for the meaning <br />of the symbols and/or <br />letter codes used in <br />this figure. <br />December 2009 Sect.6H.0l