Draft AASHTO Guide for Geometric Design of Transit Facilities on Highways and Streets

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Draft AASHTO Guide for Geometric Design of
Transit Facilities on Highways and Streets
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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
• Technical Committee on Geometric Design
• Subcommittee on Design
• Standing Committee on Public Transportation

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Basis of the Guide

• 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

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Purpose

• 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
• policy makers
• highway planners
• engineers and designers
• traffic engineers
• transit service planners
• site planners
• land developers

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Issues Covered

• Planning and decision-making guidelines
• Bus design parameters and controls, including
• 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
• detailed bus dimensions and turning paths
• busways
• off-line stations and facilities
• pedestrian and bicycle access

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Next Steps

• Currently out for ballot by
• Subcommittee on Design
• Subcommittee on Traffic Engineering
• Standing Committee on Public Transportation
• Due August 10, 2009
• Review and address comments
• Ballot Standing Committee on Highways