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| | Rail Transportation Project | Acela Express | Portland Cement Association (PCA) |
 | | In order to accommodate the high speed trains, the entire line between Washington and Boston was revitalized, including track, signals, electrification, maintenance facilities, rail yards, bridges, and several stations. |
 | | Electrification is being extended on the Northeast Corridor Line from New Haven, Connecticut, to Boston, so that the entire line will be electrified. |
 | | The engineers selected concrete ties for the high speed line because of the concrete ties' mass, stiffness, excellent ability to hold the track gage, and long life. |
| www.cement.org /transit/tr_cs_acela.asp (1522 words) |
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