Frequently Asked Questions

Motor Carrier Services

International Registration Plan

Will my vehicles still have to be emissions tested?

No. Arizona apportioned registered vehicles are exempt from Arizona emission testing requirements.

How are apportioned vehicles renewed?

Each year you will receive a renewal notice with a list of all vehicles that are currently registered in your apportioned fleet.

  • Please make any needed corrections or updates (delete vehicles).
  • Then, mail the renewal information to Motor Carrier Services or visit an authorized third-party provider. They will process your changes and send you an invoice.

How can I make my apportioned registration payment?

Options available for payment are as follows:

  • Mail: check or money order
  • Call: with credit card number
  • In person:
    • Motor Carrier Licensing Unit located at 1801 W. Jefferson St., Phoenix, AZ 85007
    • Motor Carrier Licensing Unit located at 621 E. 22nd St., Tucson, AZ 85719
    • Authorized third-party provider

Is there a charge for replacing a lost plate or cab card?

Yes, there is a $5 fee charged for replacement of an apportioned plate or cab card (plus a postage fee).

Is there an alternative to IRP registration?

All vehicles must have valid registration to operate on the highways of the Arizona. If you are eligible for IRP registration, but do not wish to obtain this type of interstate registration, you have the option of applying for full Arizona base plate registration and then stopping at each state's port of entry to purchase single trip permits as you travel through various states.

What fees are paid for registration?

The Arizona fees include registration fee, vehicle license tax, commercial registration fee, weight fee, motor carrier fee, use fee and air quality diesel fee. In addition to these fees, you also pay the applicable registration fees due for each member jurisdiction in which you choose to travel.

What if I need to travel before I get my Arizona apportion credentials?

If travel outside of Arizona prior to your IRP registration application being completed, you must purchase single trip permits for the states you wish to enter.

If you are not currently registered in Arizona, you can purchase single trip permits, which allow you to travel lawfully through Arizona. These permits are available at Arizona ports of entry or MVD Commercial Permits.

Keep in mind that you will be required to contact each state's permitting office or a permitting service agency to secure permits from each state you will enter.

Are there penalties for traveling without valid registration or permits?

Yes. If you travel in a jurisdiction without valid registration credentials or a single trip permit, you will be subject to a penalty, fines and citations, depending on each state's laws.

What records need to be maintained under IRP?

Check the Arizona Apportioned Registration Manual for all documents you are required to maintain. Also, read your Record Keeping Agreement and Individual Vehicle Mileage Report to review the type of information you will be required to provide.

How do I change the GVW for a vehicle during the registration year?

To increase the registered gross vehicle weight (GVW) during the registration year, complete and submit an Apportioned Registration Application.

A decrease in the GVW can only be done at time of renewal, using the same form, or by indicating the decrease on the IRP Registration Renewal form.

Are trailers and semitrailers required to be apportioned?

No. Trailers and semitrailers do not require apportioned registration. However, trailers and semitrailers do require current registration from any state, to operate on Arizona highways.

If you choose to register in Arizona, visit any MVD or authorized third-party office office to register your trailer permanently.