This Standard describes requirements for rolling stock wheels. The main purpose of the requirements are to reduce the risk of derailment arising from wheel failure or damage to infrastructure caused by wheel defects. This document covers the design, construction, and maintenance of rolling stock wheels. It applies to: a) new locomotive, freight, passenger, and infrastructure rolling stock wheels going into service after the date of publication; b) existing locomotive, freight, passenger, and infrastructure rollingstock wheels going into service after modification. Operation of rolling stock is not covered.