Ag CMV – Size Dimensions

A color photo of a truck tractor and tanker used for apply manure.

This truck tractor and tanker is an Ag CMV Category 3. It is used to apply manure to a farm field or for off-loading manure. When operating as an Ag CMV, it must meet size and weight requirements.

Width

  • Width limit is 10 feet including attachments or accessories
    • Exception: Pesticide sprayers, lime and fertilizer spreaders (not including manure) with extending tires, fenders and fender flares may not exceed 12 feet in width.
  • Ag CMVs over 8 feet 6 inches may not operate on interstate highways.
  • If an Ag CMV being operated or trailered exceeds width limits, see Permit section.

For vehicles exceeding these widths, see Permit section.

Height

  • The maximum height is 13 feet 6 inches.

For vehicles exceeding this height, see Permit section.

Length

  • Single vehicle
    • 45 feet
  • Two vehicle combination – one towed unit driven by a power unit
    • 70 feet
  • Three vehicle combination – two towed units drawn by a power unit.
    • No more than 100 feet with speed restriction of 25 mph or less or 70 feet at a speed greater than 25 mph.
    • Towed units being drawn by a motor truck, truck tractor, or agricultural commercial motor vehicle must be empty. “Empty” means less than 20 percent full. [s.348.08(1)(d) Wis. Stats.]
  • An Ag CMV may be transported on a trailer or semi-trailer at the same  length limits as if being driven on the highway from to and from a farm-related destination.

To operate at lengths greater than those listed above, see Permit section.

 

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