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

Arizona and New Mexico oversize load rules compared
RuleArizonaNew Mexico
Legal width8 ft 6 in8 ft 6 in
Legal height14 ft 0 in14 ft 0 in
Legal lengthSingle 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 weight80,000 lbs80,000 lbs
First pilot car at14 ft 0 in14 ft 0 in
Second pilot car atNot confirmedNot confirmed
Height pole at15 ft 0 in16 ft 0 in
Length escort atNot confirmed110 ft 1 in
Travel hoursLoads 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.
WeekendsSaturday 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$5.00Fee not confirmed
Permit officeADOT Motor Vehicle Division - Enforcement and Compliance, Commercial Vehicle Permits505-476-2475 (NMDOT Transportation Regulation Bureau (OS/OW Permit Office))

Go deeper

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.