ASTM E3422_E3422M-24

1.1 This standard specifies performance requirements and test methods for protective headgear worn by individuals who work on roadways, including personnel involved in:

1.2 This standard addresses performance in terms of impact protection, chin protection (if a chin bar is included), external projections, positional stability, retention system strength, horizontal field of view, and face/eye protection.

1.3 This standard specifies pre-conditioning procedures to address environmental conditions in which these helmets are worn.

1.4 This specification may be used by suppliers, certification or verification bodies, testing laboratories, research and development organizations, and others assessing the performance of protective helmets for pedestrian roadway workers.

1.5 This specification is divided into the following sections:

1.6 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.