Arizona OSOW Regulations (ADOT)

Legal Dimensions (No Permit Required)

• Width: 8'6"
• Height: 14' (Interstate), 13' (secondary roads)
• Length: 65'
• Legal Overhang: Front 3', Rear 6'

Legal Weights (No Permit Required)

• Gross vehicle weight: 80,000 lbs (five axles or more)
• Weight limits based on federal bridge formula

Maximum Permitted Dimensions

Routine Class A Permits

• Width: 14' maximum
• Height: 16' maximum
• Length: 120' maximum
• Weight: 250,000 lbs maximum

Beyond Routine Limits

• Over 250,000 lbs: Analyzed by ADOT Bridge Preservation Services
• Over axle weight limits: Bridge analysis required
• Posted bridge weight exceedances: Special engineering review

Permit Types and Costs

Single Trip Permits

Official ADOT Permit Fees:

• Class A Overdimensional Permit: $15
• Class A Overweight Permit: $75

Associated Fees:

• Motor carrier fee (over 50 miles): $48 per trip
• Motor carrier fee (50 miles or fewer): $12 per trip
• Use fuel fee (over 50 miles): $65 per trip
• Use fuel fee (50 miles or fewer): $16 per trip

Annual Permits

Note: Annual permit fees vary by source. Confirm with ADOT:

• Oversize annual: Estimated $360-$1,500
• Oversize/overweight annual: Estimated $600-$1,500

For current official fees, contact ADOT or visit the ePRO permit system

Escort Vehicle Requirements

When Escorts Are Required

Over Width

• 11' to 14' wide: 1 rear pilot car or escort vehicle required
• 14'1" to 16' wide: Front AND rear pilot car/escort vehicle required

Over Height

• Over 15' high: May require pilot car with height pole
• Over 16' high: 1 front escort OR 1 rear escort required

Over Length

• 120' or more: 1 escort required

Overhang

• Front or Rear overhang over 20': 1 escort pilot car required

Multiple Vehicle Movements

• Two or more oversize/overweight permitted vehicles traveling together: At least one escort vehicle per load required

Escort Vehicle Specifications

• Must be properly equipped per Arizona regulations
• Must meet equipment standards in Title 17, Chapter 6 of Arizona Administrative Code

Operating Times

Standard Hours

• Daylight hours only: 1/2 hour before sunrise to 1/2 hour after sunset

Night and Weekend Travel (Limited Conditions)

Loads not exceeding:

• 16' wide
• 16' high
• 120' long
• 250,000 lbs

May travel:

• Interstate and specified state routes at night
• 3:00 AM to 12:00 noon on weekends

Holiday Restrictions

No travel allowed on:

• New Year's Day
• Memorial Day
• Independence Day
• Labor Day
• Thanksgiving Day
• Christmas Day

Certification Requirements

• Arizona requires P/EVO (Pilot/Escort Vehicle Operator) certification
• Must complete certification course and testing
• Required for all escort vehicle operators

Penalties and Fines

Fine Range

Oversize and overweight violations:

• Starting fine: $100
• Maximum fine: Over $1,400
• Depends on: Amount exceeding maximum legal weight and number of offenses within the same year

Legal Classification

First violation:

• Civil penalty under ARS 28-5438

Second violation (within 6 months):

• Class 3 misdemeanor for violating section 28-1099 or 28-1100

Second conviction (within one year):

• Class 2 misdemeanor for violating section 28-1099 or 28-1100

Official Authority

• ARS 28-5438 (Weight violations; civil penalty; classifications)
• A.A.C. R17-06 (Oversize and Overweight Special Permits Administrative Rules, effective 07/08/2022)

Contact Information

• Website: https://azdot.gov/mvd/services/enforcement/commercial-vehicle-permits
• State: Arizona
• Agency: Arizona Department of Transportation (ADOT)

Regulatory References

• Arizona Administrative Code Title 17, Chapter 6
• Arizona Oversize and Overweight Special Permits
• https://azdot.gov/mvd/services/enforcement/commercial-vehicle-permits/general-permit-information/oversizeoverweight
• https://apps.azsos.gov/public_services/Title_17/17-06.pdf
• https://jjkellercompliancenetwork.com/regsense/oversize-and-overweight-movements-arizona

Last Updated: 2025-11-11