VTA officials warn the testing could be occurring around the clock, up to 20 hours total a day and continue for several months. They said neighbors may experience sporadic noise and vibrations.
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RELATED: VTA holds workshop on San Jose BART extension plan
VTA officials said they have to comply with noise and vibration regulations from the state and federal governments. And to do that, they have designed systems to reduce those things, like building new sound walls, making BART tracks quieter and softening the noise from equipment.
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Click here for more details on the project.