Current through Register Vol. 54, No. 50, December 14, 2024
Section 107.5 - RequirementsEach helmet shall meet the requirements of subsections (a)-(c) when subjected to any conditioning procedure specified in § 107.6(c) (relating to preliminary test procedures) and tested in accordance with § 107.7 (relating to test conditions).
(a)Impact attenuation. When an impact attenuation test is conducted in accordance with § 107.7(a), all of the following requirements shall be met: (1) peak accelerations shall not exceed 400g;(2) accelerations in excess of 200g shall not exceed a cumulative duration of 2.0 milliseconds; and(3) accelerations in excess of 150g shall not exceed a cumulative duration of 4.0 milliseconds.(b)Penetration. When a penetration test is conducted in accordance with § 107.7(b), the striker shall not contact the surface of the test headform.(c)Retention system. Requirements of the retention system shall be as follows: (1) When tested in accordance with the provisions of § 107.7(c), all of the following apply: (i) The retention system or its components shall attain the loads specified without separation.(ii) The adjustable portion of the retention system test device may not move more than 1 inch measured between preliminary and test load positions.(2) When the retention system consists of components which can be independently fastened without securing the complete assembly, each such component shall independently meet the requirements of paragraph (1).(d)Configuration. Each helmet shall have a protective surface of continuous contour at all points on or above the test line described in § 107.6(c). The helmet shall provide peripheral vision clearance of at least 105° to each side of the midsagittal plane, when the helmet is adjusted as specified in § 107.6(b). The vertex of these angles, shown in Figure 3 of Appendix A, shall be at the point on the anterior surface of the reference headform at the intersection of the midsagittal and basic planes. The brow opening of the helmet shall be at least one inch above all points in the basic plane that are within the angles of peripheral vision. See Figure 3 of Appendix A.(e)Projections. A helmet shall not have any rigid projections inside its shell. Rigid projections outside any helmet's shell shall be limited to those required for operation of essential accessories, and shall not protrude more than 0.19 inch.(f)Labeling. Each helmet shall be permanently and legibly labeled, in a manner such that the labels can be easily read without removing padding or any other permanent part, with the following:(1) Name or identification of manufacturer.(2) Precise model designation.(4) Month and year of manufacture. This may be spelled out, for example, June 1974, or expressed in numerals, for example, 6/74.(5) The symbol "DOT," constituting the certification of the manufacturer that the helmet conforms to the applicable Federal Motor Vehicle Safety Standards. This symbol shall appear on the outer surface, in a color that contrasts with the background, in letters at least 3/8 inch high, centered laterally approximately 1 1/4 inches from the bottom edge of the posterior portion of the helmet.(6) Instruction to the purchaser as follows: "Shell and liner constructed of (identify type(s) of materials).
"Helmet can be seriously damaged by some common substances without damage being visible to the user. Apply only the following: (Recommended cleaning agents, paints, adhesives, and so forth, as appropriate).
"Make no modifications. Fasten helmet securely. If helmet experiences a severe blow, return it to the manufacturer for inspection, or destroy and replace it." On an attached tag, brochure, or other suitable means, any additional, relevant safety information should be supplied at the time of purchase.
(g)Helmet positioning index. Each manufacturer of helmets shall establish a positioning index for each helmet he manufactures. This index shall be furnished immediately to any person who requests the information, with respect to a helmet identified by manufacturer, model designation and size.