Public Interest Transit Forum -
RTA Environmental Impact Statement (EIS) on
From: The Final EIS, Regional Transit System Plan, Chapter
2.0 Alternatives, 2.6.8 Alternative Rail Technologies, Vol. I,
page 2-68, March 1993.
"In this EIS, it is assumed that a rail system would
operate like new systems in other cities, including San Diego,
Portland, and Vancouver, B.C., and that it would have similar
impacts. This technology has been used extensively and its
advantages and disadvantages are apparent. Other possible
technologies, such as monorail, maglev, or terrafoil (see
Glossary), have not been used on a city-wide basis for intraurban
transportation and have not been tested on operational issues
such as switching, crossing lines, and carrying large passenger
loads between urban stations (PBQD 1991j,k). In addition, some of
the proposed rail systems facilities, including the Downtown
Seattle Transit Tunnel and the I-90 floating bridge, were
specifically designed to accomodate a conventional rapid rail
system. Other technologies would be more difficult or impossible
to accomodate (Gannett-DeLeuw 1990). Adverse impacts of different
rail technology would likely be similar to or worse than those of
conventional rail. If a different type of technology is chosen,
potential differences in its environmental impacts would be
considered in subsequent environmental reviews."
From the References section:
Parsons Brinckerhoff/Kaiser Engineers Team. 1991j. Rail
Technologies and Design Guidelines Update Report. Seattle, WA.
Parsons Brinckerhoff/Kaiser Engineers Team. 1991k, Rail
Technology Perspective Technical Memorandum, Seattle, WA.
Gannett-DeLeuw. 1990. Rail Transit Technology and Design
Guidelines. Seattle, WA.
From the Glossary section:
Monorail. A transit system (usually elevated) made up of
electric-powered vehicles guided by a single rail or beam.
Back to Top
Return to the Public Interest Transit Forum home page.
Last modified: February 07, 2011