Section 214.113 - Head protection(a) Railroad bridge workers working in areas where there is a possible danger of head injury from impact, or from falling or flying objects, or from electrical shock and burns, shall be provided and shall wear protective helmets.(b) Helmets required by this section shall conform to the requirements of 29 CFR 1910.135(b) , as established by the U.S. Department of Labor, Occupational Safety and Health Administration.67 FR 1908, Jan. 15, 2002, as amended at 74 FR 25172, May 27, 2009; 81 FR 37884, June 10, 2016