C-TRAN’s Role in the Environment: Today and Tomorrow

What We’re Doing Today:

  • C-TRAN vehicles use a combination of Ultra Low Sulfur Diesel (ULSD) and emissions control equipment to reduce fleet-wide Particulate Matter (PM)¹ emissions.
  • C-TRAN operates 17 electric-hybrid buses which use over 30% less fuel and further reduce our carbon footprint.

What You Can Do Today:

  • Choose to ride the bus one day a week. Use public transportation to go to work, shop, or take the kids to a fun attraction. According to the American Public Transit Association (APTA), riding the bus on a regular basis can save an individual an average of $8,600 per year².
  • Create a vanpool or carpool. C-TRAN's Vanpool Program offers commuters another option to reduce emissions by reducing the number of vehicles on the road. Call (360) 906-7510 for more information. Additional resources can be found at: www.ClarkCommute.org and www.CarpoolMatchNW.org 
  • Consolidate your trips. Plan ahead when you have errands to run. Buy groceries, drop off your dry cleaning and mail that package all in one afternoon, rather than doing it in several single trips. If your friend or neighbor also has errands to run, ask them if they'd like to share the ride.  

What C-TRAN Could Become by 2030:

  • C-TRAN connects cities and communities in all directions with employment, commercial, entertainment, and residential areas providing congestion relief, economic development, access to social services, and transportation to those dependent on the public system.
  • C-TRAN, in concert with other entities, provides safe core and specialized services through its transportation network and employs a variety of modes, each chosen to fit the particular route, its purpose and ridership. Potential options include bus rapid transit, trolley, streetcar, shuttles, connectors, light and heavy rail, and traditional fixed route.
  • C-TRAN is an industry leader in applying new technologies that maximize their effectiveness as a regional transportation provider enhancing the livability of the community through sound environmental practices.

C-TRAN Fuel Facts


  • Ultra-Low Sulfur Diesel: C-TRAN began using Ultra-Low-Sulfur Diesel (ULSD) fuel reducing its Particulate Matter (PM) emissions by half.


  • Exhaust After-Treatment: C-TRAN began retrofitting its fixed route fleet with emissions control equipment to futher reduce Particulate Matter (PM).
  • Introduction of Biodiesel: C-TRAN announced a demonstration project to test the benefits of 100% biodiesel (B100) in two of its fleet vehicles believing it to be the only transit agency on the West coast to do so. B100 is 100% renewable energy that produces less Carbon Dioxide (CO²) and Sulfur Dioxide (SO²) emissions.


  • Retrofitting Completed. In June, 2008, C-TRAN completed its exhaust after-treatment retrofit project on the remainder of its fixed route fleet.
  • HybridTechnology: C-TRAN put into operation 12, forty-foot electric hybrid buses which use over 30% less fuel and further reduce the agency's carbon footprint.

¹  Toxic Air Contaminants including arsenic, benzene, 1-butadiene, 3-butadiene, cadmium, acetaldehyde, acrolein, aniline, antimony cpds, beryllium cpds, biphenyl, POM including PAHs, dioxins and dibenzofurans, formaldehyde, nickel, inorganic lead, mercury compounds, methanol, methyl ethyl ketone, naphthalene,4-nitrobiphenyl and phenol.  Source: Washington State Department of Ecology

²  National average based on per-gallon gas price and the unreserved monthly parking rate as of May 5, 2009. Annual savings estimate for Portland, Oregon $9,201. For more information, go to www.apta.com