Missouri Commercial Vehicle Regulations

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Questions and Answers

What is the maximum height of any vehicle outside of a commercial zone on designated highways plus 10 miles therefrom?

  • 15' 0"
  • 13' 6" (correct)
  • 14' 6"
  • 14' 0"

What is the maximum height of any vehicle in a commercial zone?

  • 14' 6"
  • 13' 6"
  • 14' 0" (correct)
  • 15' 0"

The commercial zone is _____ mile(s) beyond the city limits plus one mile for every ______ resident(s) or portion thereof.

  • 2, 50,000
  • 1, 100,000
  • 2, 100,000
  • 1, 50,000 (correct)

What is the maximum length of any bus or trackless trolley coach not including one foot in the front and back for safety bumper?

<p>40' (A)</p> Signup and view all the answers

What is the maximum length of truck-tractor and semi-trailer upon interstates and certain designated highways?

<p>53' (A)</p> Signup and view all the answers

What is the maximum length of truck-tractor and semi-trailer upon all other roads?

<p>65' (B)</p> Signup and view all the answers

What is the maximum length of truck-trailer, semi-trailer, and trailer combinations upon interstates and certain designated highways?

<p>65' (B)</p> Signup and view all the answers

What is the maximum length of truck-trailer, semi-trailer, and trailer combinations upon all other roads?

<p>75' (A)</p> Signup and view all the answers

What is the maximum weight allowed on a single axle in a commercial zone?

<p>22,400 pounds (B)</p> Signup and view all the answers

What is the maximum weight allowed on a tandem axle on interstates?

<p>34,000 pounds (A)</p> Signup and view all the answers

What is the maximum weight allowed on a single axle on all routes except interstates and commercial zones?

<p>22,000 pounds (B)</p> Signup and view all the answers

What is the maximum weight allowed on a tandem axle on all routes except interstates?

<p>36,000 pounds (B)</p> Signup and view all the answers

What is the maximum gross weight allowed on interstates, primary and other designated highways?

<p>80,000 pounds (D)</p> Signup and view all the answers

How do you determine the maximum gross weight allowed in a commercial zone?

<p>Multiply the number of axles by 22,400 pounds. (D)</p> Signup and view all the answers

Where do you apply for an over-dimension and overweight permit?

<p>Missouri Department of Transportation, Motor Carrier Services Unit (B)</p> Signup and view all the answers

Flashcards

Maximum weight on single axle (interstates)

The maximum weight on any single axle allowed on interstates is 20,000 pounds.

Maximum weight on single axle (commercial zone)

The maximum weight on any single axle allowed in a commercial zone is 22,400 pounds.

Maximum weight on single axle (other routes)

The maximum weight on any single axle allowed on all other routes is 22,000 pounds.

Maximum weight on tandem axle (interstates)

The maximum weight on any tandem axle allowed on interstates is 34,000 pounds.

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Maximum weight on tandem axle (other routes)

The maximum weight on any tandem axle allowed on all other routes is 36,000 pounds.

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Maximum gross weight (interstates)

The maximum gross weight allowed on interstates, primary and other designated highways is 80,000 pounds.

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Determining gross weight in commercial zone

To determine maximum gross weight in a commercial zone, multiply the number of axles by 22,400 pounds.

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Applying for overweight permit

To apply for an over-dimension and overweight permit, contact Missouri Department of Transportation, Motor Carrier Services Unit.

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Maximum vehicle height on highways

Height limit for vehicles outside commercial zones plus 10 miles.

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Commercial zone population requirement

Commercial zones exist in cities with populations of 75,000 or more.

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Commercial zone distance

Commercial zone extends 1 mile beyond city limits plus 1 mile for every 50,000 residents.

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Maximum bus length

Maximum length of a bus, excluding safety bumpers, is specified.

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Truck-tractor and semi-trailer length

Length of truck-tractor and semi-trailer is limited on designated highways.

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Combination vehicle length limits

Specific length limits for truck combinations vary by road type.

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Motor vehicle overstretch allowance

Loads can extend up to 3 feet front and 4 feet rear, beyond legal limits.

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Driveaway Saddle Mount Combinations length

Maximum length for Driveaway combinations on highways is regulated.

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Study Notes

Missouri Commercial Vehicle Regulations

  • Maximum Vehicle Height (Outside Commercial Zones): Not specified in the text.

  • Maximum Vehicle Height (Commercial Zones): Not specified in the text.

  • Commercial Zone Population Requirement: Cities with 75,000 or more residents.

  • Commercial Zone Extension: 1 mile beyond city limits, plus 1 mile for every 50,000 residents or portion thereof.

  • Specific City Commercial Zone Extensions:

    • St. Louis City: Specific number of miles not provided in the text.
    • Kansas City: Specific number of miles not provided in the text.
    • Springfield, St. Joseph, and Columbia: Specific number of miles not provided in the text.
    • Interstate Highways: Specific number of miles not provided in the text.
  • Maximum Bus/Trackless Trolley Coach Length: Not provided.

  • Maximum Truck-Tractor & Semi-Trailer Length (Interstates/Designated Highways): Not provided.

  • Maximum Truck-Tractor & Semi-Trailer Length (Other Roads): Not provided.

  • Maximum Truck-Trailer, Semi-Trailer, & Trailer Combinations (Interstates/Designated Highways): Not provided.

  • Maximum Truck-Trailer, Semi-Trailer, & Trailer Combinations (Other Roads): Not provided.

  • Maximum Truck & Trailer(s)/Combination Vehicles (Interstates/Designated Highways): Not provided.

  • Maximum Truck & Trailer(s)/Combination Vehicles (Other Roads): Not provided.

  • Maximum Automobile/Boat Transporter Length: 75 feet (combination unit plus 3 feet front to 4 feet rear overhang).

  • Maximum Driveaway Saddle Mount Combination Lengths (Interstates/Designated Highways): Not specified in the text.

  • Load Extension Beyond Legal Limits: 3 feet from the front and 4 feet from the rear.

  • Exceptions to Length Limits: Farm machinery (occasional short-distance use), temporary transport of farm machinery/road-making equipment, implement dealers moving machinery, towing disabled vehicles for repair.

  • Maximum Single Axle Weight (Interstates): 20,000 pounds.

  • Maximum Single Axle Weight (Commercial Zones): 22,400 pounds.

  • Maximum Single Axle Weight (Other Routes): 22,000 pounds.

  • Maximum Tandem Axle Weight (Interstates): 34,000 pounds.

  • Maximum Tandem Axle Weight (Other Routes): 36,000 pounds.

  • Determining Gross Weight: Actual gross weight allowed depends on the distance between the first and last axles.

  • Commercial Zone Gross Weight Calculation: Multiply the number of axles by 22,400 pounds.

  • Maximum Gross Weight (Interstates, Primary & Designated Highways): 80,000 pounds.

  • Over-Dimension/Overweight Permit Application: Missouri Department of Transportation, Motor Carrier Services Unit.

  • Permit Load Requirements: The load must be non-reducible.

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