Washington State's Commute Trip Reduction (CTR) Law was passed by the Legislature in 1991 with the goals to improve air quality, reduce traffic congestion, and reduce the consumption of petroleum fuels through employer-based programs that encourage the use of alternatives to driving alone.
Alternatives include riding the bus or train, carpooling, vanpooling, bicycling, walking, working a compressed work week or teleworking.
CTR-affected worksites must conduct a measure of employee commute behavior every two years to determine progress toward CTR goals. They are also required to conduct a baseline measure of employee commutes within 90 days of becoming affected by the CTR Law.
The CTR law requires affected employers to appoint an "Employee Transportation Coordinator" (ETC) to implement, promote and administer the CTR Program on an ongoing basis.
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