Oklahoma DOT legal load size limits and weight restrictions are as follows:

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• Length: 53 feet

• Width: 8’6 feet

• Height: 13’6 feet

• Weight: 80,000 lbs GVW

When Are Pilot Cars or Escort Vehicles Required in Oklahoma?

In Oklahoma, pilot cars are required under the following conditions:

• Length: Loads over 80’ require one front pilot car. Loads over 100’ require both front and rear pilot cars.

• Width: Loads over 12’ wide require one front pilot car on roads with 4 lanes or fewer, or one rear pilot car on roads with more than 4 lanes. Loads up to 15’ wide require a second escort. Loads 18’ or wider require a police escort.

• Height: Loads over 15’9” may require a high pole escort, depending on the route.

Note: Permits will specify if they are valid for 3 or 5 days.​

How Much Do Trucking Permits Cost in Oklahoma?

• Oversize single trip permit: $40

• Overweight single trip permit: $40

• Mobile home, mobile office, modular home, or portable building permit: $40

• Single-purpose trip oversize permit: $40

• Single-purpose trip overweight permit: $40

• Monthly multi-trip permit: $40

• Special movement permit: $500

• Annual special combination permit (triples): $240

• Longer vehicle combination permit (doubles): $20

• Annual soil, hay, or tree permit: $25

• Annual oversize special purpose permit: $10

• Annual overweight special purpose permit: $60

Oklahoma Oversize and Overweight Permit Limits

Here are the maximum weight and dimension limits for loads in Oklahoma, even with a permit:

Maximum Weight:

• Single Axle Weight Permit: 20,000 pounds

• Tandem Axle Weight Permit: 40,000 pounds

• Tridem Axle Weight Permit: 60,000 pounds

• Quadem Axle Weight Permit: 80,000 pounds

• Five Axle Weight Permit: 65,000 pounds

• Six Axle Weight Permit: 115,000 pounds

• Seven Axle Weight Permit: 135,000 pounds

• Eight Axle Weight Permit: 150,000 pounds

Maximum Dimensions:

• Maximum Length With Permit: No set maximum

• Maximum Width With Permit: 16 feet

• Maximum Height With Permit: 21 feet