At a hearing scheduled for late summer, the California Air Resources Board may make changes to the Heavy-Duty Vehicle Greenhouse Gas Emission Reduction Measure.
The Board will also consider amendments to the Truck and Bus Regulation.

One possible change to the Tractor-Trailer GHG Regulation is a second optional large fleet compliance schedule, which would delay initial compliance by one year. This would allow affected large fleets that miss the July 1, 2010, reporting deadline for the existing compliance schedule to be able to phase in compliance of their trailers, beginning one year later, but at an accelerated rate.

A second modification the Board will consider is additional flexibility to the reporting requirements for both large and small trailer fleets that choose to participate in an optional trailer fleet compliance schedule. Under this amendment, these fleets could either report the specific trailers brought into conformance up front, as currently required, or to report the specific trailers they brought into conformance each year, at the end of each year.

The Board will also look into a possible "storage trailer" exemption. This would exempt storage trailers from the aerodynamic technology and low rolling resistance tire requirements of this regulation. Owners would need to register with ARB for this exemption.

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