1. Who Shifted My Transportation Planning Paradigm?
Given by:
Ronald T. Milam, AICP
Transportation Research Board
Planning Applications Conference, May 2007

2. THE FORCE BEHIND THE SHIFT
“The procedures address only local oversaturated flow situations, not systemwide oversaturated flow conditions.” – Page 22-1, HCM 2000

3. THE PROBLEM WITH TODAY’S PARADIGM
Traditional Transportation Planning Process
LAND USE PLANNING
THRESHOLDS
BASED
TRANSPORTATIONPLANNING
LOS
Functional Class
Design Standards
RECOMMENDED TRANSPORTATION PLAN
Sized to Thresholds
Process results in a plan that has unknown costs and is unlikely to be fully implemented resulting in traffic operations that will be worse than projected

4. Placer Parkway CASE STUDY EXAMPLE
Originally Identified Based on LOS Thresholds
Cost Estimate (2006) = $660 Million
Projected Available Funding by 2030 = $55 Million
Projected Construction Date = Unknown

5. HOW CAN WE RESPOND TO THE SHIFT?
The “New” Transportation Planning Process
LAND USE PLANNING
CONSTRAINTS
BASED
TRANSPORTATIONPLANNING
Funding
Environmental
Political
RECOMMENDED TRANSPORTATION PLAN
Sized to Constraints
for design year
ROW based on
thresholds
Feedback Available and Now Justified (if plan is politically unacceptable)
Process results in a plan that is consistent with constraints (especially available funding) and provides a realistic assessment of future traffic operations. ROW is still preserved based on thresholds.