The California High-Speed Rail Authority is responsible for building the United States’ first true high-speed train capable of traveling over 200 mph. The expected trip time from San Francisco to Los Angeles is about two hours and forty minutes as compared to about 7 hours by car. The intercity train network will also interface with commercial airports, mass transit, and the highway network and connect the major economic centers in California, the world’s 7th largest economy. This project is funded under the American Recovery and Reinvestment Act (ARRA) and Federal Stimulus funding. Acentech provided noise and vibration analysis that included mapping of noise exposures along the corridor of existing noise environment and future project alternatives.

Acentech advanced the state-of-art in rail analysis by using a multi-modal noise model to generate full color noise contour maps that include roadways, parking lots, and other auxiliary noise sources. We determined transfer mobility, which defines the composite vibration propagation characteristics of the soil adjacent to the rail alignment at selected locations along the corridor. We prepared a noise and vibration technical report and the noise and vibration sections of the Environmental Impact Report/Environmental Impact Statement, which is a document that identifies and examines the possible environmental effects that is submitted to the deciding authority.

This is the first segment of the 800-mile high-speed rail network that will connect the major metropolitan centers of the Central Valley, Los Angeles, the Inland Empire, Orange County, San Diego, Sacramento, and the San Francisco Bay Area.

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