Illinois Pilot Car Requirements
When Illinois requires a pilot car, how many, and when a height pole car is needed. Set by IDOT Bureau of Operations, Permit Office.
IL, reviewed October 2026
The short answer for Illinois
Loads wider than 14 ft 6 in need a pilot car in Illinois.
Illinois asks for a first pilot car at 14 ft 6 in wide. 5 of the 45 states that publish a width wait until a wider load, and 39 start earlier.
One civilian escort is required for moves exceeding 14'6" wide, 14'6" high or 110 ft long; two (front and rear) if two of those are exceeded; three over 16 ft wide, 18 ft high or 145 ft long; ISP escort over 18 ft wide or high or 200 ft long.
Check your load for Illinois
Oversize permit required in Illinois
- Width 10 ft 0 in exceeds the 8 ft 6 in legal limit.
No width-based pilot car at 10 ft 0 in wide.
Illinois escort thresholds
| First pilot car | 14 ft 6 in wide and over |
|---|---|
| Second pilot car | Not confirmed: check your permit conditions |
| Height-pole escort | Not confirmed: check your permit conditions |
| Length escort | 110 ft 0 in long and over |
Pilot cars by load width in Illinois
Escorts to plan for at each width, from the thresholds above. The permit sets front and rear positions.
| Load width | Pilot cars |
|---|---|
| 8 ft 6 in (legal width) | None required for width |
| 9 ft 0 in | None required for width |
| 10 ft 0 in | None required for width |
| 11 ft 0 in | None required for width |
| 12 ft 0 in | None required for width |
| 13 ft 0 in | None required for width |
| 14 ft 0 in | None required for width |
| 15 ft 0 in | 1 pilot car |
| 16 ft 0 in | 1 pilot car |
Before you book an escort
- Read the escort conditions on your Illinois permit. They control over any summary, including this one.
- Ask about certification and insurance rules for escort drivers at IDOT Bureau of Operations, Permit Office ((217) 785-1477).
- See the full Illinois 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 Illinois with a neighbor: Indiana, Iowa, Missouri.
Sources
- https://idot.illinois.gov/doing-business/permit-and-sales-marketplace/oversize-and-overweight-permits.html
- https://idot.illinois.gov/doing-business/permit-and-sales-marketplace/oversize-and-overweight-permits/osow-resources.html
- https://idot.illinois.gov/content/dam/soi/en/web/idot/documents/idot-forms/oper/oper-993.pdf
- https://idot.illinois.gov/content/dam/soi/en/web/idot/documents/idot-forms/oper/oper-753.pdf
- https://webapps1.dot.illinois.gov/ITAP/Documents/2025%202026%20Holiday%20Office%20Closings%20and%20Permit%20Travel%20Restrictions.pdf
Illinois Pilot Car FAQs
- How wide can a load be in Illinois before it needs a pilot car?
- Illinois requires the first pilot car at 14 ft 6 in wide. Loads up to the 8 ft 6 in legal width travel without a width escort.
- When does Illinois require a height pole car?
- Illinois does not publish a single height at which a pole car is required in the sources we reviewed. Confirm it with IDOT Bureau of Operations, Permit Office; permit conditions often set it per route.
- Is a pilot car required for long loads in Illinois?
- Illinois lists a length trigger of 110 ft 0 in for an escort. Check the permit for how many escorts a long load needs.
- Do I need Illinois pilot car certification?
- Escort driver certification and reciprocity rules differ by state and change often. The permit conditions from IDOT Bureau of Operations, Permit Office 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 Illinois'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 6 in wide, reviewed October 2026. Regulations change and this is not legal advice; the conditions printed on your permit control.