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 Remendations issued by the World Trade Organization Technical Barriers to Trade (TBT)Committee. Designation:E3311/E3311M-21 INTERNATIONAL Standard Test Method for Evaluating Response Robot Mobility Using Variable Diagonal Rail Obstacles1 This standard is issued under the fixed designation E3311/E3311M:the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision.A number in parentheses indicates the year of last reapproval. A superscript epsilon (e)indicates an editorial change since the last revision or reapproval. INTRODUCTION The robotics munity needs ways to measure whether a particular robot is capable of performing specific missions in plex unstructured and often hazardous environments.These missions require various binations of elemental robot capabilities.Each capability can be represented as a test method with an associated apparatus to provide tangible challenges for various mission requirements and performance metrics to municate results.These test methods can then be bined and sequenced to evaluate essential robot capabilities and remote operator proficiencies necessary to successfully perform intended missions. The ASTM International Standards Committee...