Missouri Vehicle Regulations Quiz

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Questions and Answers

What is the maximum permissible height for a vehicle operating outside a commercial zone on designated highways?

8 1/2 feet (correct)

9 feet

8 feet

9 1/2 feet

What is the minimum population requirement for a city to establish commercial zones?

75,000 (correct)

50,000

100,000

65,000

According to the content, what is the established commercial zone for a city like St. Louis?

Extends 15 miles beyond the city limits

Extends 18 miles beyond the city limits (correct)

Extends 12 miles beyond the city limits

Extends 10 miles beyond the city limits

What is the maximum length permitted for a single vehicle, without being a bus or trackless trolley coach?

45 feet Signup and view all the answers

What is the maximum length permitted for a truck-tractor and semi-trailer combination when operating on interstate highways?

53 feet Signup and view all the answers

What is the maximum length allowed for a combination of truck-tractor, semi-trailer, and a trailer when driven on roads other than interstates?

65 feet Signup and view all the answers

Which of the following is an exemption from size limits on highways, excluding interstate highways?

Farm machinery driven occasionally Signup and view all the answers

What is the maximum allowable length for Automobile Transporters and Boat Transporters?

75 feet Signup and view all the answers

What is the maximum weight allowed on any single axle when driving on interstate highways?

20,000 lbs Signup and view all the answers

Which of the following represents the maximum single axle weight limit in a commercial zone?

22,400 lbs Signup and view all the answers

What is the maximum weight allowed on a single axle for routes that are not interstates or in a commercial zone?

22,000 lbs Signup and view all the answers

What is the maximum weight allowed on a tandem axle on interstate highways?

34,000 lbs Signup and view all the answers

What is the maximum weight permitted on a tandem axle for routes other than interstates?

36,000 lbs Signup and view all the answers

How is the maximum gross weight determined in commercial zones?

By the number of axles multiplied by 22,400 lbs Signup and view all the answers

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

80,000 lbs Signup and view all the answers

What are the three main criteria for obtaining an oversize or overweight permit?

The load must be non-reducible, have liability insurance, and pay a fee Signup and view all the answers

From which source can you obtain the Missouri Vehicle Route Map?

The Missouri Department of Transportation Signup and view all the answers

Which of the following is an exception regarding the Federal Motor Carrier Safety Regulations in Missouri?

Certain lighter vehicles transporting solid waste and farm vehicles under specific conditions Signup and view all the answers

What federal regulations must vehicles transporting hazardous materials comply with?

The United States Department of Transportation Signup and view all the answers

Which types of vehicles are exempt from having to carry emergency equipment?

Vehicles licensed for 42,000 lbs or less with an 'F' plate, and solid waste haulers licensed for 60,000 lbs or less Signup and view all the answers

What is the minimum following distance a bus or truck must maintain from another similar vehicle?

300 feet Signup and view all the answers

When must you stop before railroad tracks when driving certain commercial vehicles?

15 to 50 feet Signup and view all the answers

How should one compensate for off-tracking when turning a long vehicle?

Begin a left turn as far to the right as possible, and a right turn as far to the left as possible Signup and view all the answers

Study Notes

Missouri Vehicle Dimensions and Regulations

Height Limits:
- Commercial Zones: Maximum height not specified.
- Designated Highways (outside commercial zones): 8.5 feet.
- All other highways: Maximum height not specified.

Commercial Zones

Requirements: Cities with a population of 75,000 or more.
Extent: One mile beyond city limits, plus one mile for every 50,000 residents.
St. Louis Commercial Zone: 18 miles beyond city limits.
Other City Commercial Zone: 12 miles beyond city limits.

Length Limits

Single Vehicle (any vehicle): 45 feet.
Bus/Trackless Trolley Coach: 45 feet.
Truck-tractor and semi-trailer (interstates): 53 feet.
Truck-tractor and semi-trailer (other roads): 60 feet.
Truck-tractor, semi-trailer, and trailer combinations (interstates): 28 feet.
Truck-tractor, semi-trailer, and trailer combinations (other roads): 65 feet.
Trucks and trailers (interstates): 65 feet.
Trucks and trailers (other roads): 55 feet.
Automobile/Boat Transporters: 75 feet.
Driveaway Saddle Mount Combinations (interstates): 97 feet.

Exceptions/Exemptions

Load Extensions: Motor vehicle carriers can carry loads exceeding their legal limits.
Exemptions (excluding interstate highways): Farm machinery (used occasionally and transporting it temporarily, or road-making machines.

Weight Limits

Single Axle (interstates): 20,000 lbs.
Single Axle (commercial zone): 22,400 lbs.
Single Axle (other routes): 22,000 lbs.
Tandem Axle (interstates): 34,000 lbs.
Tandem Axle (other routes): 36,000 lbs.
Commercial Zone Gross Weight: Multiply the number of axles by 22,400 lbs.
General Highway Gross Weight: 80,000 lbs on interstates, primary, and other designated highways (except where lower posted limits).

Permits

Oversized/Overweight Permits: Possible; require non-reducible load, liability insurance, and a fee.

Additional Regulations

Missouri Vehicle Route Map: Available from the Missouri Department of Transportation. This map shows routes where heavier/larger trucks are allowed to travel.
Federal Motor Carrier Safety Regulations Exceptions (Missouri): Certain lighter vehicles transporting solid waste, and farm vehicles exempt with specific conditions.
Hazardous Materials: Vehicles transporting hazardous materials must comply with the equipment and operating regulations of the U.S. Department of Transportation (DOT).
Emergency Equipment: Requirements for emergency equipment vary. Vehicles licensed for 42,000 pounds or less ('F' plate), and solid waste haulers for 60,000 lbs or less, do not require emergency equipment.
- Other Commercial Vehicles: Fire extinguisher, spare fuse, combination of warning devices.
Vehicle Identification: Owner's name, address, and motor carrier number must be clearly visible; additional local requirements may apply.

Driving Practices

Following Distance: Maintain a 300-foot minimum following distance between buses and trucks or similar vehicles.
Closer Following: Allowed in business/residential districts, or when passing.
Following Distance Calculation: For each 10 feet of vehicle length, maintain one second following distance.
Stopping before railroad tracks (certain vehicles): 15–50 feet.
Load Security: Secure loads or use protective covers to prevent falling objects.
Turning: Begin left turns as far right as possible, right turns as far left as possible to compensate for off-tracking.
Weigh Stations: Vehicles licensed for 18,000 pounds or less, or otherwise exempted by law, are not required to stop at weigh stations.
Tailgating: Slow down and increase your distance from the vehicle ahead. Avoid high-speed tailgating.
Vehicle Clearance: Check for objects (wires, signs, trees, air conditioning units) that may interfere with your vehicle.
Road Surface Considerations: Assess road surface (parking lots, unpaved roads/areas, construction areas) to consider vehicle weight and length.

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Description

Test your knowledge on vehicle dimensions and regulations in Missouri. This quiz covers height and length limits for various vehicle types in commercial zones and highways. Challenge yourself and see how well you understand these important transport regulations.