Arizona vs New Mexico Oversize Load Rules
What changes for an oversize load between Arizona and New Mexico: legal height, pilot car triggers, height poles and travel hours.
I-10, I-40, reviewed October 2026
What changes at the Arizona and New Mexico border
- Legal height
- Both states use the same legal height, 14 ft 0 in.
- First pilot car
- Both states require the first pilot car at 14 ft 0 in wide.
- Height pole
- Arizona requires a height-pole escort from 15 ft 0 in; New Mexico from 16 ft 0 in.
Check one load against both states
Arizona
- Oversize permit required
- No width escort
New Mexico
- Oversize permit required
- No width escort
11 ft 0 in wide, 14 ft 0 in tall. Length is not checked here.
Side by side
| Rule | Arizona | New Mexico |
|---|---|---|
| Legal width | 8 ft 6 in | 8 ft 6 in |
| Legal height | 14 ft 0 in | 14 ft 0 in |
| Legal length | Single vehicle 40 ft; semitrailer in tractor-semitrailer 57 ft 6 in; truck-semitrailer combination 65 ft overall (A.R.S. 28-1095, with exceptions); each unit of doubles 28 ft 6 in. | Statutory height limit 14 ft per NMAC 18.19.8; legal single-trailer and combination length limits not verified from an official source. |
| Gross weight | 80,000 lbs | 80,000 lbs |
| First pilot car at | 14 ft 0 in | 14 ft 0 in |
| Second pilot car at | Not confirmed | Not confirmed |
| Height pole at | 15 ft 0 in | 16 ft 0 in |
| Length escort at | Not confirmed | 110 ft 1 in |
| Travel hours | Loads over 10 ft wide, 14 ft 6 in high, or over 120 ft long move from 30 min before sunrise to 30 min after sunset; night movement from 3:00 a.m. allowed for 10-16 ft wide / 14 ft 6 in-16 ft high loads on non-holiday nights with required escorts (R17-6-401, 402); metro curfews apply over 10 ft wide. | Daylight only (30 minutes before sunrise to 30 minutes after sunset) unless continuous movement is specifically authorized on the permit; no movement in inclement weather. |
| Weekends | Saturday and Sunday movement allowed on non-holiday weekends for loads 10-16 ft wide (R17-6-402), subject to route Table 4 and escort requirements. | No weekend restriction in the rule; daylight movement applies any day of the week except holidays. |
| Trip permit | $5.00 | Fee not confirmed |
| Permit office | ADOT Motor Vehicle Division - Enforcement and Compliance, Commercial Vehicle Permits | 505-476-2475 (NMDOT Transportation Regulation Bureau (OS/OW Permit Office)) |
Go deeper
- Pilot car detail: Arizona, New Mexico
- Full guides: Arizona, New Mexico
- Running through both without local plates? Estimate the trip permit cost
- Moving over a holiday? Check holiday restrictions
Arizona and New Mexico FAQs
- Do Arizona and New Mexico require pilot cars at the same width?
- Both states require the first pilot car at 14 ft 0 in wide.
- Is the legal truck height the same in Arizona and New Mexico?
- Both states use the same legal height, 14 ft 0 in.
- Do I need a separate permit for each state between Arizona and New Mexico?
- Yes. Oversize and overweight permits are issued by each state, so a move through both needs a permit from ADOT Motor Vehicle Division - Enforcement and Compliance, Commercial Vehicle Permits and one from NMDOT Transportation Regulation Bureau (OS/OW Permit Office), each with its own route, hours and escort conditions.
- Which travel hours apply in Arizona and New Mexico?
- Arizona: Loads over 10 ft wide, 14 ft 6 in high, or over 120 ft long move from 30 min before sunrise to 30 min after sunset; night movement from 3:00 a.m. allowed for 10-16 ft wide / 14 ft 6 in-16 ft high loads on non-holiday nights with required escorts (R17-6-401, 402); metro curfews apply over 10 ft wide. New Mexico: Daylight only (30 minutes before sunrise to 30 minutes after sunset) unless continuous movement is specifically authorized on the permit; no movement in inclement weather. The conditions printed on the permit control.
Compiled from each state's published permit rules, reviewed October 2026. Not legal advice; the conditions printed on your permit control.