Auxiliary fuel taps

June 1, 2026

Auxiliary fuel systems play an important role in powering vocational equipment, but improper installation can create serious safety and compliance risks. This article reviews OEM fuel tap provisions, evaporative emissions considerations, rollover protection features, and evolving guidance surrounding electric power take-off (ePTO) systems for commercial vehicles.

Vehicle Upfitting Considerations

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Are 4221 tax-free sales treated as “taxable” when determining if a prior taxable sale or further manufacturing has occurred?

Recent legal developments have created new questions surrounding Federal Excise Tax (FET) treatment of Section 4221 tax-free sales. This article examines evolving IRS interpretations, discusses how these changes could...

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How GVWR and GCWR affect commercial driver’s license requirements

Commercial driver's license (CDL) requirements aren't determined by gross vehicle weight rating (GVWR) alone. This article explains how gross combination weight rating (GCWR) can influence CDL requirements for vehicles...

July 1, 2026

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Cargo partitions

Cargo partitions play an important role in protecting vehicle occupants, but what performance standards apply? This article examines regulatory guidance related to cargo partitions, reviews comparable industry...

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Auxiliary fuel taps

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