Might have been access problems with the "neighbors",to install poles with out taking a track out of service.
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bostontrainguy wrote:Doesn't the CT catenary also reduce the likelihood of wire breakage in very cold weather and sagging in hot weather i.e. increased reliability?Matt Johnson wrote:The last of the four tracks is finally getting constant tension wire installed. Will the existing Acelas see a bump up to 150 mph here?So much money and so much time for so little. Even if they increase the speeds, how much schedule time is going to be reduced? (Would money have been better spent reducing the "S" curve at Elizabeth?)
https://www.railpictures.net/photo/697391/" onclick="window.open(this.href);return false;
They also talked about raising the speeds to 160 in the already constant tension sections in Massachusetts. Again probably not much of a schedule savings but at least a good test bed for higher speed operations.
ExCon90 wrote:Regarding the posts above about the nonstop Metroliner, Baltimore enacted an ordinance around the time the Union and B&P Tunnels were built requiring all trains operating through Baltimore to make a station stop in that city, and the City Council blew the dust off the ordinance and started to make difficulties over that nonstop Metroliner, but the situation resolved itself when Amtrak discontinued the nonstop to fill seats. I suppose the issue could be raised again if nonstop Acelas were introduced.There was a "super express" Acela in introduced in January 2008, but dropped on April 4 (PHL stop only).
Matt Johnson wrote:Well, what they did get done is roughly equivalent to the Attleboro - Mansfield stretch in Massachusetts, so hopefully still enough to let Avelia stretch its legs and show off its 160 mph speed for a couple of minutes.That's a lot of wiring!!
One other factor will be the speed on the upgraded variable tension segments on either end. If it's, say, 140 mph, that helps a little bit. The new variable tension hangars can be seen here at Hamilton:
http://www.railpictures.net/photo/657488/" onclick="window.open(this.href);return false;