The Bursting Energy Absorbing Terminal (BEAT) is a proprietary terminal developed by Road Systems Inc.
All of the version of the BEAT terminal use the force of vehicle to drive a wedge into the box beam.
Source: RSI
https://roadsystems.com/beat-beat-mt/
https://roadsystems.com/beat-sscc/
https://roadsystems.com/beat-bp/
https://roadsystems.com/beat-beat-mt/
https://tf13.org/Guides/crashcushionGuide/index.php?action=view&crashcushion=85
https://roadsystems.com/mash-mbeat/
https://tf13.org/Guides/endterminalGuide/index.php?action=view&endterminal=368