It is the policy of the state of Washington that limited public transportation funding and competition between freight and general mobility improvements for the same fund sources require strategic, prioritized freight investments that reduce barriers to freight movement, maximize cost-effectiveness, yield a return on the state's investment, require complementary investments by public and private interests, and solve regional freight mobility problems. State financial assistance for freight mobility projects must leverage other funds from all potential partners and sources, including federal, county, city, port district, and private capital.