1. Submitting Incomplete or Inaccurate Vehicle Information
Incorrect VINs, license plate numbers, or USDOT details are among the top reasons for permit rejections.
Tip: Double-check your truck and trailer details against registration records before submitting. The NMDOT online system (PermitsNM) flags mismatched or missing data.
2. Misclassifying Divisible vs. Non-Divisible Loads
Carriers sometimes request oversize/overweight permits for divisible loads (e.g., gravel, lumber, pallets), which are not eligible.
Tip: Only non-divisible loads — those that cannot be reduced without damage or more than eight hours of dismantling — qualify for OS/OW permits.
3. Failing to Provide Accurate Axle Spacing and Weight Data
Incorrect axle weight distribution or spacing measurements can invalidate a permit.
Tip: Measure from the center of each axle to ensure accuracy. Axle spacing directly affects bridge and route approvals.
4. Ignoring Route Restrictions and Bridge Clearances
Some carriers assume any route is open once they receive a permit — but specific highways and bridges may have posted limits or detours.
Tip: Always confirm your assigned route and follow it exactly. Deviating from an approved route can void the permit.
5. Forgetting Escort or Pilot Car Requirements
Oversize loads exceeding certain dimensions often require escort vehicles, but carriers sometimes overlook this.
Tip: Review NMDOT’s escort requirements chart before travel. The need for front/rear escorts depends on the load’s width, height, and route type.
6. Missing Travel Time Restrictions
Permitted loads may not move during curfews, nighttime, or holidays.
Tip: Check your permit’s “movement allowed” section carefully — New Mexico restricts OS/OW loads on major holidays and during inclement weather.
7. Using Expired or Reused Permits
Each permit is trip-specific and time-limited. Attempting to reuse an expired or single-trip permit can lead to fines.
Tip: Always verify the effective and expiration dates before departure. Renew or reapply if your schedule changes.
8. Not Accounting for Weather and Seasonal Weight Limits
New Mexico’s high-elevation roads and weather patterns can cause temporary restrictions, especially during spring thaw or heavy rain.
Tip: Check NMDOT’s seasonal notices before scheduling oversize or overweight trips.
9. Skipping the Route Survey for Superloads
Loads that exceed standard oversize thresholds require a route survey and special review — a step carriers sometimes skip.
Tip: For loads over 16 feet high or 140,000 lbs, submit a certified route survey with your application to avoid delays.
10. Failing to Maintain Proof of Permit in the Vehicle
Carriers must carry a physical or electronic copy of the permit during transport.
Tip: Keep a printed copy or a PDF version accessible in the cab for roadside inspections. Officers can issue citations if it’s missing.
Bonus Tip: Not Using the Online Permitting System Correctly
New Mexico’s www.newmexicotruckingonline.com streamlines applications, but missing required fields or attachments can delay processing.
Tip: Create a company profile, upload supporting documents (insurance, registration), and review every section before final submission.
Bottom Line
Even small administrative mistakes can result in permit denials, fines, or travel delays in New Mexico. By carefully reviewing load details, verifying routes, and staying current with NMDOT rules, carriers can keep freight moving safely and legally.