Section 229-501-05 - OVERHEAD AND SIDE CLEARANCESA. Minimum overhead and side clearances on railroad bridges may be decreased to conform with the clearances as shown on the accompanying diagram entitled "Figure 1."B. Minimum overhead and side clearances may be reduced for eave overhang on buildings constructed adjacent to a railroad sidetrack to six (6) feet from the center of the track at heights of seventeen (17) feet or more above the top of the rail, provided full side clearance, as required in Section 3, is maintained between the track and the building below a height of seventeen (17) feet, and further provided that full overhead and side clearance is maintained on the opposite side of the track and the close clearance is marked by an appropriate sign or signal in a conspicuous location at a sufficient distance from the obstruction to provide adequate warning."17-229 C.M.R. ch. 501, § 05