RouteAllThe 12 Most Common Errors on State Oversize Permits
Last verified September 8, 2026 against the state rules linked in each item.
Oversize permit mistakes are cheap to fix before you roll and expensive after. New Mexico lists 15 violations that void a permit outright, and 8 of them are errors visible on the paper. Read the permit before the first mile, not at the scale.
Every item below links to the state rule that makes it a violation.
In one minute: check the dimensions, the dates, the route and the conditions against the load on your trailer. If anything disagrees, get an amended permit before you move.
Whitney runs height pole for a living and has seen the worst version of this.
"I had a permit that routed a 13ft wide load down a road that had a 11ft width restriction."
Whitney S. Johnson, height pole escort
That permit was issued by the state and it was still wrong. The rules below say who carries that risk, and the answer is almost never the state.
Errors 1 and 2: carrier and vehicle identity
A permit belongs to one carrier and one vehicle. New Mexico writes that a special permit is not transferable from carrier to carrier or vehicle to vehicle. Swapping the tractor after the permit is issued is not a paperwork detail; it voids the permit.
- Error 1, wrong permittee. New Mexico voids a permit when the permittee is not the owner or lessee of the permitted vehicle.
- Error 2, substituted vehicle. Improper identification or substitution of a vehicle, combination or load voids the permit outright.
Pennsylvania is equally blunt.
Its rule says the permit may not be assigned or transferred to another person, or carried by another person operating under it.
Errors 3 and 4: the dates nobody re-reads
Permit dates are short and they run out mid-move. Pennsylvania single-trip permits expire after 5 authorised weekdays have lapsed, as specified on the permit. New York trip permits run a period not to exceed five permissible hauling days.
Count the days against your actual schedule, including the days a curfew will cost you.
- Error 3, expired window. A delay at the shipper eats permit days you cannot get back without a new permit.
- Error 4, one-direction permit. Pennsylvania states a permit may not authorise a return trip unless requested and shown on the permit.
Holidays and weekends shorten the window further. The state-by-state windows are in Travel-time and curfew restrictions by state.
Errors 5, 6 and 7: dimensions that do not match the load
The three numbers on the permit must match the load on the trailer. New Mexico voids a permit when the size or weight limitations specified in it are exceeded. Nothing on the permit protects a load that grew by two inches when the tarps went on.
Measure the loaded trailer, not the drawing. A load two inches over the permit is an unpermitted load.
- Error 5, width. The most common trigger and the one that decides your escorts.
- Error 6, height. Measure to the highest point, including any bracing or dunnage added at the yard.
- Error 7, length and overhang. New Mexico requires the application to identify the size and location of any overhangs.
Round up, never down. A permit written for the figure you hoped for is an error you signed. Which numbers trigger a permit at all is covered in Do you need an oversize permit? The 4 numbers that decide.
Error 8: axle spacing and gross weight
Weight errors come from the axle table, not the total. New Mexico requires the application to give the number and spacing of axles, the tires on each axle, and the weight on each axle.
Get one spacing wrong and the bridge formula behind the permit is wrong too.
Reweigh after any change to how the load sits on the trailer. Every field on a real permit, axle table included, is walked through in How to read a Texas TxDMV oversize permit.
Errors 9 and 10: the route and who owns each road
Your permit authorises the roads it names, and nothing else. New Mexico voids a permit when movement is made on a highway other than those specifically noted, unless detouring around construction or an obstruction. Pennsylvania allows deviation only when a police officer directs it.
The second half of this error is quieter and catches more people.
- Error 9, off-route travel. Any road not on the permit is unpermitted, including the fuel stop you always use.
- Error 10, local streets. New Mexico says permission from local authorities may be required for the local-street portion of a move.
Pennsylvania lists local roads in brackets on the permit and requires separate permission for them. The cost of getting this wrong is in What happens if you leave your permitted route.
Errors 11 and 12: the conditions block
The travel conditions are the block drivers skip and the block that voids the permit. Whitney names it directly: the field misread most often is the rules and regulations pertaining to travel. It holds the curfew, the escort count and the weather limits, in small print at the foot.
- Error 11, missed travel condition. New Mexico voids a permit for failure to comply with any condition or restriction specified in it.
- Error 12, missing escort. Absence or cessation of a required escort vehicle during the movement voids the permit.
Florida makes the escort side concrete. The permittee is responsible for giving the escort a copy of the permit before the move, and the escort thresholds are in Pilot car requirements by state.
Which states void a permit for these errors?
New Mexico, Pennsylvania and Utah all publish the consequence in the rule itself, and all three treat a voided permit as no permit at all. The table shows what each state says about incorrect information and about carrying the permit in the vehicle.
| State | Incorrect information | Carrying the permit | Source |
|---|---|---|---|
| New Mexico | Void; 15 listed violations; no refund | Paper or electronic, must be legible | 18.19.8.13, .21 and .28 NMAC |
| Pennsylvania | Automatically invalid for false application information | Permit plus Form M-938 in the vehicle | 67 Pa. Code 179.10(1) and (8) |
| Utah | Permittee assumes responsibility for crashes and damage | Paper or electronic format accepted | Utah Admin. Code R909-2-8 |
Georgia adds a signature rule.
A driver's signature signifies acknowledgement of understanding all requirements listed on the permit, and the signed permit must be in the vehicle for inspection at all times.
How do you fix an error before you roll?
Call the issuing state and get an amended permit. New Mexico requires exactly that and says the move must not start until the corrected permit is issued. A permit containing incorrect information is void, so moving on it and sorting the paperwork later is not an option that exists.
"If a permittee finds that the special permit does not cover the entire move or that it is incorrect, the permittee shall contact the DOT and request the necessary changes or amendments to the special permit." — 18.19.8.21(B) NMAC. Verified September 8, 2026.
The same rule sets out the pre-trip check the state expects. Before starting, the permittee must review the permit for accuracy and confirm any required surveys and maps are attached. The permittee must also understand every condition, know the route, and be aware of special circumstances along it.
That is a five-point check and it takes about ten minutes.
Does the permit guarantee the road will fit?
No, and this is the error behind Whitney's 11-foot bridge. New Mexico states that issuing a permit is not a guarantee of the sufficiency or clearance of any highway or structure on the route. Pennsylvania says granting a permit may not be considered a guarantee of the sufficiency of a highway.
Florida puts the split in writing: the department verifies load-carrying capacity, and the hauler verifies vertical and horizontal clearance. Above 15 feet high or 16 feet wide the hauler must carry a survey letter confirming 6 inches of height clearance and 2 feet each side.
So a state-issued route can still put you under a bridge that does not fit.
A permitted route is not a surveyed route. You must confirm clearances yourself before the move.
Before you roll
Spend ten minutes on the permit before the first mile. Check the carrier and vehicle, the dates, the three dimensions against the loaded trailer, the axle weights, the roads listed, and the conditions block at the foot. If anything disagrees, get an amended permit rather than starting the move. RouteAll does not issue permits or guarantee compliance; the other RouteAll driver guides cover the rest.
Common questions
What makes an oversize permit void?
New Mexico lists fifteen violations that void a permit outright. They include starting a move on a permit with incorrect information, exceeding the size or weight on its face, using an unauthorised bridge, and not carrying the permit. Pennsylvania voids a permit automatically for false application information.
Can I fix a wrong dimension on the road?
No. New Mexico requires you to contact the state and get an amended permit before the move starts. A permit that contains incorrect information is void, and a permit issued after a violation does not cancel the violation. Stop and amend rather than roll and hope.
Does the permit guarantee my load will fit?
No. New Mexico states that a permit is not a guarantee of the sufficiency or clearance of any highway or structure on the route. Pennsylvania says the same. The state routes you; verifying vertical and horizontal clearance stays with the hauler.
Does RouteAll check my permit for errors?
No. RouteAll reads the permit you already hold and turns the roads on it into navigation. It does not issue permits, validate dimensions, or guarantee compliance. The permit and the state rule decide; the driver remains responsible for the load.
Further reading
Sources
- New Mexico, 18.19.8 NMAC, sections 10, 12, 13, 18, 21, 22, 28 and 29.
- Pennsylvania, 67 Pa. Code § 179.10, paragraphs (1), (3), (5), (8) and (9).
- Utah, Utah Admin. Code R909-2-8.
- Georgia, Ga. Comp. R. & Regs. R. 672-2-.03, subsections (b) and (d).
- New York, 17 NYCRR 154-1.2, subsection (b).
- Florida DOT, Blanket Permit Movement Conditions and Restrictions, revised May 30, 2025.
RouteAll reads the permit you provide. It does not issue permits or guarantee compliance. The driver remains responsible for the load. Rules change; verify against the permit and the issuing state before every move.