Ontario Oversized Load Transport Guide: Regulations & Best Practices
Important Note: We are not a permit service and we do not arrange permits for carriers. All information provided below is for information purposes only. Always read permits and provisions carefully as we cannot guarantee the accuracy of information provided below.
Navigating Ontario’s travel restrictions for oversized vehicles requires careful route planning for overweight vehicles and understanding the permit application process for oversized freight. Whether you’re managing regular shipments or one-time moves, these guidelines will help ensure compliance.
Permit Information
- Single-trip permits valid for 3–5 days (must be secured before entering Ontario)
- Permit costs vary based on load size and frequency of transport
- Annual permits available for regular oversized carriers
- Longer processing times expected for non-standard dimensions
Operating Hours & Travel Restrictions
- Standard hours: ½ hour before sunrise to ½ hour after sunset (Mon–Fri)
- Weekend travel depends on load size, route, and season
- Night travel allowed for loads under 10′ wide and 14′ high with:
- Reflectorized “D” signs
- Proper lighting and visibility equipment
- GTA restrictions: No travel 7:00–9:00 AM or 3:30–6:30 PM
Understanding Weight Limits for Vehicles
- Steer axle: 12,000 lbs
- Single axle: 22,000 lbs
- Tandem axle: 39,600 lbs
- Tridem axle: 59,400 lbs
Equipment Specifications
- Tractor wheelbase:
- May exceed 244″ for legal loads (if trailer complies)
- Restricted to 244″ for oversize loads unless specially authorized
- Spread axles (6′+ spacing): Treated as closed tandems (≈22,000 lbs/axle)
- Lift axles: Subject to reduced weight allowances
Legal Dimensions
- Length: 53′ semi-trailer / 75′ maximum overall
- Rear overhang: Up to 4′11″ (without exceeding 75′ total)
- Width: 8′6″
- Height: 13′7″
Routine Permit Limits
- Length: Up to 120′
- Width: Up to 16′3″
- Height: Up to 14′
- Route surveys may be required for these dimensions
Escorts Needed for Transporting Large Machinery
- Length:
- Over 120′: 1 escort
- Over 150′: 2+ police escorts
- Overhang:
- Over 15′ rear: 1 escort
- Width:
- Over 13′: 1 escort + possible route survey
- Over 15′ (two-lane): 2 escorts
- Over 16′4″: 2+ police escorts
- Height:
- Over 15′11″: 1 escort
- Over 14′: Possible route survey required
Marking and Signage Requirements for Oversize Loads
- Flags:
- Required on all four corners
- Required on front/rear projections
- Must be illuminated at night
- Signs:
- “Oversize Load” or “D” signs required on front and rear
- Signs must be removed/covered when not in use
- Additional lighting may be required based on load dimensions
Best Practices for Managing Heavy Haul Logistics
- Apply for permits at least 7 days in advance (longer for complex loads)
- Verify pilot vehicle and escort requirements before departure
- Conduct detailed route surveys for:
- Height clearances
- Bridge weight limits
- Road restrictions
- Maintain up-to-date documentation:
- Permits
- Escort plans
- Emergency contact info
- Train drivers on:
- Handling of oversized loads
- Emergency protocols
- Compliance checks
Permit Application Process for Oversized Freight
- Gather accurate dimension and weight details
- Select and map the proposed route
- Identify escort requirements
- Submit application with:
- Vehicle specs
- Load details
- Travel schedule
- Allow extra processing time for larger or complex moves