One of the components of the R211 testing regimen is the noise/vibration test, which is done to ensure that the new cars fall within acceptable levels. Noise and vibration monitors are set up along the right-of-way, and the train is operated at high speed so readings can be taken. Enjoy!
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Some clips used in this video were taken by Alex Campbell and used with their explicit permission with full knowledge of the nature of their use. Subscribe to his channel:
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Taken in July 2022.