This webinar provides transportation planners and designers with the tools to understand the underlying research and principles behind the AASHTO publication A Policy on Geometric Design of Highways and Streets (Green Book), and the inherent flexibility within the design criteria. Webinar presenters discuss what is meant by “flexibility in design” and reinforce why flexibility is important. In this webinar, you will learn:

• What flexibility in design means, and why it is important
• The background on the AASHTO Policy on Geometric Design of Highways and Streets
• How design flexibility is incorporated in the Green Book contents
• What additional resources and training are available

Download Slides [pdf 24.3MB]

• Public and private sector transportation planning and engineering professionals
• Non-Governmental Organization professionals engaged in transportation planning
• University teachers and students

• Welcome and opening remarks
• Presentations:
  • The Background on the AASHTO Policy on Geometric Design of Highways and Streets
  • The Project Development Process and Flexibility
  • Highway Design Controls and Designer Discretion
  • Flexibility in Geometric Design Elements and Criteria
  • Design Exceptions and Risk Management
  • Response to Audience Questions

Documents/Reports

AASHTO A Policy on Geometric Design of Highways and Streets
AASHTO Guide for Achieving Flexibility in Highway Design
Flexibility in Highway Design, FHWA
Mitigations Strategies for Design Exceptions, FHWA
AASHTO Bike Guide
AASHTO Ped Guide
Draft PUBLIC ROW ACCESSIBILITY GUIDE
TRB Special Report 214Third level

Websites to Reference

AASHTO
Center for Environmental Excellence
FHWA Resource Center
TRB
Project for Public Spaces
Complete Streets
CSS
Pedestrian and Bicycle Information Center

Additional Training Available

Exploring the Green Book: Basic Geometric Design (FHWA Course)
Highway Geometric Design for Safety & Efficiency (FHWA Course)
NHI Training Catalog

Webinar first conducted June 15, 2009 by the Center for Environmental Excellence by AASHTO in cooperation with the Federal Highway Administration and the Federal Transit Administration.