Traffic Impact Fee Service Area polygons for unincorporated Pierce County. Traffic impact fees are collected to improve the transportation system to accommodate the higher travel demand added by new development. Please read the metadata (https://matterhorn.co.pierce.wa.us/GISmetadata/pdbpubw_traffic_impact_fee_areas.html) for additional information. Any data download constitutes acceptance of the Terms of Use (https://matterhorn.co.pierce.wa.us/Disclaimer/PierceCountyGISDataTermsofUse.pdf).