Oklahoma Oversize / Overweight Permit Requirements
Legal-without-permit dimension limits, escort and pilot car thresholds, height pole rules, daylight-only windows, and holiday restrictions for Oklahoma oversize moves.
Legal limits without a permit
In Oklahoma, you can move a load without an OSOW permit up to these dimensions on the Interstate and designated highways. Anything over the limits requires a permit (and may require escorts — see below).
| Dimension | Without a permit | Permit required when |
|---|---|---|
| Width | 8′6″ (federal limit) | Anything wider |
| Height | 13′6″ | Anything taller |
| Combo length | 75′0″ | Anything longer |
| Gross weight | 80,000 lb | Anything heavier |
Escort and pilot car thresholds
When permitted, the following escort or movement-restriction rules apply in Oklahoma. Thresholds are conservative — your specific permit conditions may impose tighter limits depending on the route.
| Trigger | Dimension | Threshold | Detail |
|---|---|---|---|
| Police escort | Length | 200'0" | Oklahoma Highway Patrol escort required for overall lengths exceeding 200'. OHP escort discretionary for 150'–200' (47 O.S. §14-116). |
| Rear pilot car | Length | 100'0" | Rear pilot added for combos over 100' on 2-lane/super 2-lane roads. Lead+chase both required. OHP escort discretionary at 150'–200'; required over 200' (OAC 595:30-5-15). |
| Front pilot car | Length | 80'0" | Front pilot required on 2-lane roads for truck-tractor/semitrailer combos over 80'. For other combos, pilot required over 100' on 2-lane (OAC 595:30-5-15). |
| Police escort | Width | 23'0" | Oklahoma Highway Patrol escort required for widths exceeding 23'. Between 20'–23', OHP escort discretionary. Turnpike max without escort is 12'; over 13'6" not permitted on turnpikes (47 O.S. §14-116). |
| Front pilot car | Height | 15'9" | Front+rear pilots plus height-clearance pole required for heights over 15'9". Utility contacts required before movement. No night movement over 15'9" (OAC 595:30-5-15). |
| Rear pilot car | Height | 15'9" | Rear pilot required in addition to front escort for heights over 15'9". Height pole and utility contacts also required (OAC 595:30-5-15). |
| Height pole | Height | 15'9" | Height-clearance pole mandatory on lead pilot car for loads exceeding 15'9" tall. Utility notification and coordination required (OAC 595:30-5-15). |
| Front pilot car | Width | 14'0" | Front pilot required on 2-lane/super 2-lane roads for widths over 14'. On multi-lane, lead not required until width exceeds 16' (OAC 595:30-5-15). |
| Rear pilot car | Width | 12'0" | Rear pilot required on multi-lane highways for widths 12'1"–16'. On 2-lane roads, chase added at over 14'. Lead+chase required over 16' on all roads (OAC 595:30-5-15). |
| Certified escort required | Width | 12'0" | ODOT certification required for all escort drivers. OSU Tech-administered course; 5-year renewal term. Reciprocal with AZ, CO, FL, MN, NC, UT, VA, WA, GA (OAC 595:30-5-15). |
| Daylight-only movement | Width | 12'0" | Movement permitted only 1/2 hr before sunrise to 1/2 hr after sunset, 7 days/week. No night oversize travel without special written ODOT authorization (OAC 595:30-3-1). |
| Weekend / holiday restriction | Width | 12'0" | No oversize movement on New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day (47 O.S. §14-101). Holiday window begins noon of preceding day. |
Stop tracking these rules by hand.
OverSizeTMS encodes the per-state escort and dimension rules for every state plus DC. Enter the load dimensions and route, and the platform tells you which permits, escorts, and time windows apply automatically.
See how it works →Last updated 2026-06-06. Cross-checked against the state admin code.