What is the Washington State Commute Trip Reduction (CTR) law?

The Washington State Commute Trip Reduction (CTR) law is a state mandate requiring employers with 100 or more employees who work at a single worksite to develop and implement a program to reduce single-occupancy vehicle trips during peak commuting hours. Learn more about Washington’s CTR requirements here


Puget Sound’s I-5 is one of the nation’s worst congestion points, causing issues for the environment, commuters, and employers. Spokane County and several central Washington counties are also affected by heavy traffic congestion. To solve these issues, the Washington State legislature adopted the Commute Trip Reduction law, which is now also part of Washington’s Clean Air Act. 


The CTR goal is to reduce statewide air pollution from greenhouse gas emissions through a commute trip reduction program where the use of single-occupant vehicles is less, favoring other modes of travel. 


See how we can help your organization develop a commute program that fits your needs and meets the state requirements here

Show All Answers

1. What is a transportation program?
2. How much does the program cost?
3. How can I measure the success of an alternative transportation program?
4. What is an Employee Transportation Coordinator (ETC)?
5. What is the Washington State Commute Trip Reduction (CTR) law?