Noise levels on red line

[nvidia99999.livejournal.com]

Has anyone used a sound meter to measure the noise level on the red line between Harvard Sq and Alewife? Especially, between Harvard Sq and Davis Sq? I bet it's more than 110 dBs. If one takes the T twice a day, for extended periods of time, I bet that one incurs hearing damage, especially in the low frequency ranges. Clearly, there are more important issues the MBTA is dealing with, but if the noise levels are above what sound exposure regulations permit, I'd say that customers should know about it.

Comments

[ceo]

It's louder between Harvard and Davis because there's two one-track tunnels, as opposed to one two-track tunnel.

However, the Orange Line is a lot louder, at least from the outside. Really, all of the lines ought to be nearly silent; the noise is the result of poor wheel and track maintenance.