Washington Pilot Car Requirements

When Washington requires a pilot car, how many, and when a height pole car is needed. Set by WSDOT Commercial Vehicle Services (Permits).

WA, reviewed October 2026

The short answer for Washington

Loads wider than 14 ft 0 in need a pilot car in Washington, and wider than 20 ft 0 in need two. A height-pole escort is required at 14 ft 6 in tall.

Washington asks for a first pilot car at 14 ft 0 in wide. 6 of the 45 states that publish a width wait until a wider load, and 29 start earlier; 9 more match it.

Over 11 ft wide on two-lane highways: front and rear escorts; on multilane highways one rear escort over 14 ft and two escorts over 20 ft (undivided); front height-pole escort over 14 ft 6 in; rear escort over 105 ft long on two-lane, over 125 ft on multilane.

Check your load for Washington

Oversize permit required in Washington

  • Width 10 ft 0 in exceeds the 8 ft 6 in legal limit.

No width-based pilot car at 10 ft 0 in wide.

Washington escort thresholds

Washington pilot car thresholds by dimension
First pilot car14 ft 0 in wide and over
Second pilot car20 ft 0 in wide and over
Height-pole escort14 ft 6 in tall and over
Length escort125 ft 0 in long and over

Pilot cars by load width in Washington

Escorts to plan for at each width, from the thresholds above. The permit sets front and rear positions.

Pilot cars needed by load width in Washington
Load widthPilot cars
8 ft 6 in (legal width)None required for width
9 ft 0 inNone required for width
10 ft 0 inNone required for width
11 ft 0 inNone required for width
12 ft 0 inNone required for width
13 ft 0 inNone required for width
14 ft 0 in1 pilot car
15 ft 0 in1 pilot car
16 ft 0 in1 pilot car

Height pole by load height in Washington

Height pole escort by load height in Washington
Load heightPermit neededHeight pole car
13 ft 6 inNoNot required
14 ft 0 inNoNot required
14 ft 6 inYesRequired
15 ft 0 inYesRequired
15 ft 6 inYesRequired
16 ft 0 inYesRequired

Before you book an escort

  • Read the escort conditions on your Washington permit. They control over any summary, including this one.
  • Ask about certification and insurance rules for escort drivers at WSDOT Commercial Vehicle Services (Permits) (360-704-6340).
  • See the full Washington oversize guide for legal dimensions, travel hours and holiday limits. New to the terms? The glossary covers pilot car and height pole.

Crossing a border? Compare Washington with a neighbor: Idaho.

Sources

Washington Pilot Car FAQs

How wide can a load be in Washington before it needs a pilot car?
Washington requires the first pilot car at 14 ft 0 in wide and a second at 20 ft 0 in wide. Loads up to the 8 ft 6 in legal width travel without a width escort.
When does Washington require a height pole car?
A height-pole escort is required at 14 ft 6 in tall and over in Washington. The pole is set just above the load so the escort driver finds low wires and structures first.
Is a pilot car required for long loads in Washington?
Washington lists a length trigger of 125 ft 0 in for an escort. Check the permit for how many escorts a long load needs.
Do I need Washington pilot car certification?
Escort driver certification and reciprocity rules differ by state and change often. The permit conditions from WSDOT Commercial Vehicle Services (Permits) state who may escort a load, so confirm certification and insurance requirements there before you book an escort.
Where do the pilot car numbers on this page come from?
They are taken from Washington's published permit rules and statutes, reviewed in October 2026, with the source links listed on this page. Where a figure could not be confirmed it is marked as not confirmed rather than estimated.

Summary of first pilot car at 14 ft 0 in wide, two at 20 ft 0 in, height pole at 14 ft 6 in, reviewed October 2026. Regulations change and this is not legal advice; the conditions printed on your permit control.