The 10,001 to 26,000 band gets a list of parts, not the whole rulebook
This is the Idaho provision that lands most precisely on this equipment, and it is worth reading in full rather than in summary. IDAPA 11.13.01.019.01.b provides: “Intrastate carriers operating commercial motor vehicles transporting property with a GVW, GVWR, GCW or GCWR greater than ten thousand (10,000) pounds and up to twenty-six thousand (26,000) pounds, subject to the authority of the Idaho State Police, must comply with 49 CFR Part 390 Subpart A, Part 391.15, Parts 392, 393, and Part 396.1, 396.3(a), (a)(1), and (a)(2), and 396.5 through 396.9 and the law and rules of the state of Idaho.”
That is an enumerated list, and enumeration is the whole mechanism. Where a general adoption clause names parts by range and sweeps everything in, this sentence names specific parts and specific sections, and what is not named is not on the list. Idaho’s general adoption for carriers outside the band sits at 002.04 and is drawn the other way: “49 CFR Parts 356, Subtitle B, Chapter III, Subchapter B, Sections 365, 380, 382, 383, 385, 386, 387, 388 and 390 through 399.”
Set the two side by side and what falls out of the band list is substantial. The driver-qualification part appears only as section 391.15 — the disqualification section — rather than as a part. The hours-of-service part is absent entirely. The financial-responsibility part is absent. The controlled-substances and alcohol testing part is absent. Within the inspection, repair and maintenance part, the band gets 396.1, 396.3(a) and its first two subparagraphs, and 396.5 through 396.9 — which leaves the driver vehicle inspection report sections outside the list.
The second sentence of the same paragraph shows Idaho drawing the other line deliberately: “All intrastate carriers transporting placardable quantities of hazardous material under 49 CFR Part 172, Subpart F and passengers, meeting the definition of a commercial motor vehicle, must comply with 49 CFR Parts 356, 365, 382, 383, 385, 387, 388 and 390 through 399, and the law and rules of the state of Idaho (except Part 391.11(b)(1) for intrastate carriers).” Placarded hazmat and passengers get the full set; property inside the band gets the short one.
One more provision sits immediately above it and is easy to skip. IDAPA 11.13.01.019.01.a provides that intrastate carriers subject to both the incorporated federal rules and the safety authority of the Idaho State Police “may hire drivers who are eighteen (18) years or older as set forth in Section 49-303, Idaho Code.” That is a state-side permission tied to a state statute, and like everything else in section 019 it reaches intrastate operation only.
The practical warning attached to all of this is the same one that attaches to every band written in ratings: a combination is assembled rather than manufactured. GVW, GVWR, GCW and GCWR are four different measures and the rule names all four. Putting a heavier trailer behind the same truck can change which side of 26,000 pounds the operation sits on, and nothing announces the crossing.
- Named for the band: Part 390 Subpart A, section 391.15, Parts 392 and 393, and 396.1, 396.3(a), (a)(1), (a)(2) and 396.5 through 396.9.
- Not named for the band: the driver-qualification part beyond section 391.15, the hours-of-service part, the financial-responsibility part, the drug and alcohol testing part, and the driver vehicle inspection report sections.
- Placarded hazmat and passenger carriage get Parts 356, 365, 382, 383, 385, 387, 388 and 390 through 399 instead.
- Four weight measures are named — GVW, GVWR, GCW and GCWR — so the trailer decides as much as the truck does.