The Des Moines City Council has updated its Commute Trip Reduction Plan to reduce local air pollution, traffic congestion and energy consumption, as required by state law.

This plan, mandated in 1991 under Washington's Clean Air Act, requires large employers in the city to implement programs that reduce both drive-alone commuter trips and the number of vehicle miles traveled by employees on those trips.

Currently, Des Moines has two work sites that are required to have commute trip reduction plans for employees - Highline Community College and City Hall.

King County Metro supports the city's plan through an interlocal agreement.