Commute Trip Reduction (CTR) Law: What is CTR?

What is Commute Trip Reduction?


In 1991, the Washington State Legislature passed the Commute Trip Reduction (CTR) Law. It requires employers to work with employees to reduce the number and length of drive alone commute trips. The CTR Law is part of the Washington Clean Air Act and a key component of the State’s Climate Action Plan.

What is the purpose?
  • To reduce greenhouse gas emissions and other air pollutants
  • To reduce traffic congestion and drive-alone commuters
  • To keep businesses moving and thriving
How does it help businesses?
  • Allows growth without increasing traffic congestion
  • Providing commute options contributes to employee satisfaction and retention
  • Tax incentives and credits are available for providing transportation benefits
Who is required to participate?

Employers who have 100+ employees at a single worksite who:

  • Arrive between 6-9AM, 2+ weekdays for 12 continuous months of the year
  • Full-time: scheduled 35+ hours per week

Learn more about our free services to help your business navigate the rules of CTR. Schedule a free consultation with one of our CTR specialist.