This appendix identifies abbreviations for emission control information labels, as required under §1037.135.

Vehicle Speed Limiters

—VSL—Vehicle speed limiter

—VSLS—“Soft-top” vehicle speed limiter

—VSLE—Expiring vehicle speed limiter

—VSLD—Vehicle speed limiter with both “soft-top” and expiration

Idle Reduction Technology

—IRT5—Engine shutoff after 5 minutes or less of idling

—IRTE—Expiring engine shutoff

Tires

—LRRA—Low rolling resistance tires (all, including trailers)

—LRRD—Low rolling resistance tires (drive)

—LRRS—Low rolling resistance tires (steer)

Aerodynamic Components

—ATS—Aerodynamic side skirt and/or fuel tank fairing

—ARF—Aerodynamic roof fairing

—ARFR—Adjustable height aerodynamic roof fairing

—TGR—Gap reducing tractor fairing (tractor to trailer gap)

—TGRT—Gap reducing trailer fairing (tractor to trailer gap)

—TATS—Trailer aerodynamic side skirt

—TARF—Trailer aerodynamic rear fairing

—TAUD—Trailer aerodynamic underbody device

Other Components

—ADVH—Vehicle includes advanced hybrid technology components

—ADVO—Vehicle includes other advanced-technology components (i.e., non-hybrid system)

—INV—Vehicle includes innovative (off-cycle) technology components

—ATI—Automatic tire inflation system

—TPMS—Tire pressure monitoring system

—WRTW—Weight-reducing trailer wheels

—WRTC—Weight-reducing trailer upper coupler plate

—WRTS—Weight-reducing trailer axle sub-frames

—WBSW—Wide-base single trailer tires with steel wheel

—WBAW—Wide-base single trailer tires with aluminum wheel

—WBLW—Wide-base single trailer tires with light-weight aluminum alloy wheel

—DWSW—Dual-wide trailer tires with steel wheel

—DWAW—Dual-wide trailer tires with aluminum wheel

—DWLW—Dual-wide trailer tires with light-weight aluminum alloy wheel