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Tractor-Trailer Greenhouse Gas Regulation


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Regulation information


Options (provisions and credits)

  • Clarification of low rolling resistance tire requirements for older tractors - Implementation of low rolling resistance tire requirements for 2010 and older model year tractors has been clarified. Affected tractors must use new or retread SmartWay verified tires by January 1, 2013. However, if a non-compliant tire was manufactured or retreaded before January 1, 2013, it may be used through the useful tread life or until January 1, 2015, whichever comes first. See Advisory MSC 12-19 for full details. For clarification of retreaded open shoulder drive tire requirements see Advisory MSC 12-26.
  • Small fleets (20 or fewer trailers): Registration has closed for the small fleet provision, which required trailer owners to report  by January 1st, 2013.
  • Large Fleets (21 or more total trailers): Registration has closed for the Large Fleet Phase-in Option 1 and Option 2, which required trailer owners to report by July 1, 2010, and June 1, 2012, respectively.
  • Refrigerated-van trailers that are model year 2003 to 2009 AND equipped with 2003 or newer model year transport refrigeration unit (TRU) engines may delay requirements for the GHG regulation. Requirements for other regulations, such as those specific to TRUs still apply.

Program and Regulation Information



Financial Assistance


Reporting and Compliance Tools


Exemptions

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Link iconAbout the regulation


  • Requires
  • Applies to
  • Does not apply to
  • Small fleets
  • Deadlines
  • Low-rolling resistance tires (LRRTs) are required on all 2010 MY or newer tractors and trailors. For 2010 MY and older equipment: All tractors required to have LRRTs by Jan. 1, 2013. All trailers required by Jan. 1, 2017.
  • Aerodynamic devices are required on all 2010 MY or newer sleeper-cab tractors and trailers. Aerodynamic devices are required for 2010 MY and older trailers, unless you already registered and are following a phase-in plan.

  • The regulation applies primarily to owners of 53-foot or longer box-type trailers, including both dry-van and refrigerated-van trailers, and owners of the heavy-duty tractors that pull them on California highways.
  • These owners are responsible for replacing or retrofitting their affected vehicles with compliant aerodynamic technologies and low rolling resistance tires.
  • All owners regardless of where their vehicles are registered must comply with the regulation when they operate their affected vehicles on California highways.

  • Trailers less than 53 feet
  • Drayage tractors and trailers that operate within a 100 mile radius of a port or intermodal rail yard.
  • Curtain side vans
  • Solid waste vehicles
  • Drop frame vans
  • Container chassis

Fleets of 20 trailers or fewer may delay installation requirement of Smartway Aerodynamics if they were reported before the Small Fleet deadline. 25% of the trailers must have Smartway Aerodynamics installed by January 1st, 2014, 50% by January 1st, 2015, 75% by January 1st, 2016, and 100% by January 1st, 2017.


The following are Greenhouse Gas Provision deadlines:

July 1, 2010; June 1, 2012

  • Deadline to report for Large Fleet Phase-in option.

July 1, 2010; June 1, 2012

  • Deadline to report for Large Fleet Phase-in option.

January 1, 2013

  • Deadline for trailers not following a provision, of model year 2010 and older to have Smartway Aerodynamics, Low-Rolling Resistance Tires on Tractor.
    • Deadline to report for Small Fleet Phase-in option.