page_title: Automatic equipment identification
hierarchical_section_title: Automatic equipment identification
caption_attribution_description: English: Trackside Automatic equipment identification (AEI) reader
context_page_description: Automatic equipment identification is an electronic recognition system in use with the North American railroad industry. Consisting of passive tags mounted on each side of rolling stock and active trackside readers, AEI uses RF technology to identify railroad equipment while en route.
context_section_description: Automatic equipment identification (AEI) is an electronic recognition system in use with the North American railroad industry. Consisting of passive tags mounted on each side of rolling stock and active trackside readers, AEI uses RF technology to identify railroad equipment while en route.
caption: RFID antenna used by trackside AEI readers
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