The National Academies

NCHRP 20-07/Task 398 [Active]

Development of Performance-Based Geometric Design Content for the Next Edition of the AASHTO Green Book
[ NCHRP 20-07 (Research for AASHTO Standing Committee on Highways) ]

  Project Data
Funds: $100,000
Staff Responsibility: B. Ray Derr

These funds were approved to fulfill the intent of the AASHTO Standing Committee on Highway's resolution "Direction on Flexibility in Design Standards." $100,000 in 20-07 funds were obligated along with $100,000 in 20-24 funds. The work has been divided in subtasks.

  • Task 398A. $20,000 was added to the NCHRP 20-07/Task 394 contract to increase the focus on flexibility in Chapter 1 of the next edition of the Green Book (published in 2018).
  • Task 398B. $100,000 was contracted to MRIGlobal to do the technical editing for the next edition of the Green Book (published in 2018).
  • Task 398C. $30,000 to fund an additional meeting of the AASHTO Technical Committee on Geometric Design so that they can meet the development schedule and fulfill the intent of the resolution (complete).
  • Task 398D. $50,000 in reserve, likely to be used for educational materials for executives and practitioners.

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