Transcript McDonnell Transit Guide Update

Draft AASHTO Guide for
Geometric Design of
Transit Facilities
on Highways and Streets
Development of Guide
Developed through two Cooperative
Research Program (NCHRP and TCRP)
projects over the past several years.
 Resulting research report was reviewed
and edited by an ad-hoc working group
consisting of reps from:
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Technical Committee on Geometric Design
 Subcommittee on Design
 Standing Committee on Public Transportation
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Basis of the Guide
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Guidelines are based on a review of AASHTO,
TRB, and ITE documents, as well as design
reports provided by various transit agencies
Guide also incorporates findings from targeted
investigations conducted to fill voids in the
assembled information
Purpose
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To provide a single, comprehensive reference of
current practice in the geometric design and
placement of transit facilities on streets and
highways
A transit companion to the AASHTO “Green Book”
Targeted toward a wide range of stakeholders
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policy makers
highway planners
engineers and designers
traffic engineers
transit service planners
site planners
land developers
Issues Covered
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Planning and decision-making guidelines
Bus design parameters and controls, including:
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descriptions of vehicle types and characteristics
geometric design controls
highway and transit capacity considerations and guidelines
general transit infrastructure considerations
Bus transit facilities found in controlled-access highway
settings (freeways) and along streets
Light rail and streetcar transit operations on streets and
roadways
Appendices contain supporting information on:
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detailed bus dimensions and turning paths
busways
off-line stations and facilities
pedestrian and bicycle access
Next Steps
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Currently out for ballot by:
Subcommittee on Design
 Subcommittee on Traffic Engineering
 Standing Committee on Public Transportation
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Due August 10, 2009
 Review and address comments
 Ballot Standing Committee on Highways
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