Michigan (MI) Pilot Car & Escort Vehicle Requirements

Escort requirements, travel restrictions, and signage rules for oversize/overweight loads in Michigan.

Legal Dimensions — Michigan

Max Width
8'6"
Max Height
13'6"
Max Length
53'0"
Gross Weight
80,000 lbs
Front Overhang
3'0"
Rear Overhang
4'0"

Interstate Escort Requirements

Width

Min WidthMax Width EscortsPositionNotes
8'7" 12'0" 0 Permit required, no escort
12'1" 14'0" 1 Rear
14'1" 20'0" 2 Front + Rear

Height

Min HeightMax Height EscortsPositionNotes
13'7" 14'0" 0 Route clearance required
14'1" 14'6" 0 High pole + route clearance
Height pole required
14'7" 15'0" 1 Front High pole required
Height pole required
15'1" 20'0" 2 Front + Rear Route survey required
Height pole required

Length

Min LengthMax Length EscortsPositionNotes
53'1" 90'0" 0 Permit required
90'1" 100'0" 1 Rear
100'1" 150'0" 2 Front + Rear
150'1" 200'0" 2 Front + Rear 2+ escorts

Overhang

Min OverhangMax Overhang EscortsPositionNotes
15'1" 30'0" 1 Rear

Non-Interstate / State Road Escort Requirements

Width

Min WidthMax Width EscortsPositionNotes
8'7" 12'0" 0 Permit required
12'1" 14'0" 1 Front
14'1" 20'0" 2 Front + Rear

Height

Min HeightMax Height EscortsPositionNotes
13'7" 14'0" 0 Route clearance required
14'1" 14'6" 0 High pole + route clearance
Height pole required
14'7" 15'0" 1 Front High pole required
Height pole required
15'1" 20'0" 2 Front + Rear Route survey required
Height pole required

Length

Min LengthMax Length EscortsPositionNotes
53'1" 90'0" 0 Permit required
90'1" 100'0" 1 Rear
100'1" 150'0" 2 Front + Rear
150'1" 200'0" 2 Front + Rear 2+ escorts

Overhang

Min OverhangMax Overhang EscortsPositionNotes
15'1" 30'0" 1 Rear

Travel Restrictions

Standard Hours
Sunrise to sunset
Night Travel
Not permitted for oversize loads
Weekend Travel
Weekend until 3 PM for compliant loads.
Holiday Restrictions
No travel on major holidays
Urban Restrictions
Over 12' wide or over 90' long: restricted 7-9 AM and 3-6 PM in specified counties

Signage & Flag Requirements

Oversize Load Sign
Required on oversize loads
Flags
Standard flags at extremities
Disclaimer: These regulations are for informational purposes only. Always verify with the Michigan Department of Transportation before moving any oversize/overweight load. Regulations change frequently.

Moving an Oversize Load Through Michigan?

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