Washington (WA) Pilot Car & Escort Vehicle Requirements

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

Legal Dimensions — Washington

Max Width
8'6"
Max Height
14'0"
Max Length
75'0"
Gross Weight
80,000 lbs
Front Overhang
3'0"
Rear Overhang
4'0"

Interstate Escort Requirements

Width

Min WidthMax Width EscortsPositionNotes
8'7" 14'0" 0 Permit required, no escort
14'1" 20'0" 1 Rear
20'1" 24'0" 2 Front + Rear

Height

Min HeightMax Height EscortsPositionNotes
14'1" 14'6" 0 Permit required
14'7" 20'0" 1 Front High pole required
Height pole required

Length

Min LengthMax Length EscortsPositionNotes
75'1" 125'0" 0 Permit required
125'1" 200'0" 1 Rear

Overhang

Min OverhangMax Overhang EscortsPositionNotes
0'1" 40'0" 1 Rear When overhang exceeds 1/3 total length

Non-Interstate / State Road Escort Requirements

Width

Min WidthMax Width EscortsPositionNotes
8'7" 11'0" 0 Permit required
11'1" 16'0" 2 Front + Rear 2 escorts on 2-lane
16'1" 20'0" -1 Case-By-Case Case by case determination

Height

Min HeightMax Height EscortsPositionNotes
14'1" 14'6" 0 Permit required
14'7" 20'0" 1 Front High pole required
Height pole required

Length

Min LengthMax Length EscortsPositionNotes
75'1" 105'0" 0 Permit required
105'1" 200'0" 1 Rear

Overhang

Min OverhangMax Overhang EscortsPositionNotes
0'1" 40'0" 1 Rear When overhang exceeds 1/3 total length

Travel Restrictions

Standard Hours
Daylight hours
Night Travel
Not permitted for oversize loads
Weekend Travel
Weekends for loads 10' wide or less and 105' long or less only.
Holiday Restrictions
No travel on holidays or after noon the preceding day
Urban Restrictions
Commuter curfews near Seattle/Everett/Tacoma/Olympia/Vancouver/Kelso

Signage & Flag Requirements

Oversize Load Sign
Required front 5' height, rear 5-7' height
Flags
Standard flags at extremities
Disclaimer: These regulations are for informational purposes only. Always verify with the Washington Department of Transportation before moving any oversize/overweight load. Regulations change frequently.

Moving an Oversize Load Through Washington?

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