How we use the models:
Road & Intersection Design
Projected traffic volumes are used to determine design features (e.g. number of lanes) for
road and intersection projects.
Grant Applications
This model provides traffic volumes and other travel statistics for grant applications for
federal and state funding programs.
Transportation Concurrency
Existing and six-year arterial forecasts from the model are parts of the Transportation Concurrency Annual Report.
Traffic Impact Fee (TIF) Program
A major modeling effort was a key part in the development of the
Traffic Impact Fee (TIF) Program. Any updates to the TIF program will likely require further modeling efforts.
Community Plans
Further modeling may be needed to support new or updated
community plans, in the
Pierce County Comprehensive Plan.
Environmental Studies
Traffic modeling is sometimes required for environmental studies of public and private projects. This ensures compliance with the
State Environmental Policy Act (SEPA).
A year 2030 land use and travel demand forecast was built as part of an update for a state mandate.
Corridor Studies
Future traffic volumes from the model are used to choose alignment alternatives for corridor studies.
Traffic Impact Analysis (TIA) Requirements
Traffic modeling is sometimes needed for the
Traffic Impact Analysis required for major development proposals.
Interagency Coordination
Cities and other agencies often request modeling help and other data, through
interagency coordination, for use in their transportation studies.