In most corridor applications, all
things being equal (e.g., extent, quality of components, amenities),
a BRT line will cost less than an LRT line. That having been
said, BRT can represent a substantial investment in both capital
and operating and maintenance costs. Accordingly, one should
take the decision to invest in BRT seriously, and follow the same
basic planning and project planning process as one might use for
any rapid transit investment, irrespective of whether requesting
Federal funding assistance is being contemplated.
The description below is a broad outline. It
does not go into detail on planning and analysis legislation, regulations,
methodologies, organizations, public involvement, the environmental
review process under the National Environmental Policy Act (NEPA). The
best place to obtain detailed information and guidance on the Federal
New Starts planning and project development process is from the Federal
Transit Administration.
Having enunciated and gotten policy official endorsement
of goals, objectives and criteria, transportation planners will begin
the rapid transit planning and project development process (i.e., “New
Start planning and project development process) with an in-depth
analysis of the characteristics and causes of current and potential
future transportation and transportation related problems in a given
corridor. This corridor (or corridors) will have been identified
by the ongoing systems planning process as needing a rapid transit
investment of some kind. This analysis, know as an “alternatives
analysis” will focus on multi-modal (transit and highway) demand,
supply condition and performance in the corridor or corridors in
question. It will also cover transportation-related environmental,
social, economic development and land use related challenges and
issues.
After a complete analysis of the current and projected
future (i.e. analysis of a no project or “do-nothing” alternative)
situation, alternative rapid transit and/or multi-modal solutions
can be identified. The first alternatives(s) to be identified
will be one or more modest investment alternatives also referred
to as “TSM” or base-case alternatives. These
will include both additions of new capacity and services as well
as operational improvements.
Based on the results of analysis of the “TSM” alternatives,
one or more rapid transit alternatives are identified and analyzed.
Where a modest BRT investment is being contemplated, there may be
only one rapid transit “build” alternative, while where
a more expensive (e.g., in excess of $75m) BRT and other rail-based
alternatives are being examined, less expensive rapid transit alternatives
will be examined as well.
Following the open, objective analysis of the full
range of alternatives in terms of the goals, objectives and criteria
enunciated at the beginning of the planning process, policy officials
will select the single rapid transit alternative to take into more
detailed planning, engineering and design. This alternative will
be defined in terms of basic mode, and general alignment. The next
step in the process, preliminary engineering, further defines the
alternative selected at the conclusion of alternatives analysis to
a level of detail normally requiring completion of 30% of all engineering
and design activities.
At the conclusion of preliminary engineering, the
environmental review process under NEPA will have been completed
and the scope and cost of the project will be known with a level
of confidence that will permit commitment to construction of the
project by the various funding partners, including the Federal Transit
Administration. The Federal commitment will reflect a rigorous cost-effectiveness
analysis utilizing the results of both the alternatives analysis
and preliminary engineering processes.
The recently enacted Federal Surface Transportation
legislation: “Safe, Accountable, Flexible, Efficient Transportation
Equity Act: A Legacy for Users” (SAFETEA-LU)
requires a less-rigorous alternatives analysis and FTA evaluation
process for project where less than $75m of Federal funds are being
requested, under a new “Small Start” transit capital
assistance program; however, the basic process described above and
illustrated below will be the same as for major “New Start” projects.
Figure I: Alternatives Analysis Process
Establish Goals
and Objectives;
Transportation, Related Quality of Life |
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Evaluate Current Problems,
Future Challenges
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Evaluate
Alternatives |
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Decision on Mode and General
Alignment
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Figure II: Alternatives Analysis
(AA) In The Over-All Planning And Project Development Continuum
Author: Sam Zimmerman
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