In-depth IRP: Can trip permits be used with restricted plates?
Carriers operating vehicles with restricted plates often assume trip permits allow short‑term interstate travel. However, under the International Registration Plan (IRP), restricted plates are treated differently than fully apportioned registrations. And trip permits don’t change those limitations.
In most cases, trip permits do not legalize interstate travel for restricted plates. What does that mean, and are there exceptions?
What are restricted plates?
The IRP defines a “restricted plate” as:
- A plate that has a time, geographic area, distance, or commodity restriction; or
- A mass transit or other special plate issued for a bus leased or owned by a municipal government, a state or provincial transportation authority, or a private party, and operated as part of an urban mass transit system.
Definitions and limitations vary by the jurisdiction that issues the plate. Common examples of restricted plates include:
- Farm,
- Transporter,
- Dealer,
- Manufacturer,
- Repair,
- Special mobile equipment, and
- Forestry.
Understanding how restricted plates are defined is only the first step. Whether those plates are recognized outside the base jurisdiction depends on reciprocity.
It’s all about reciprocity
Under IRP, a vehicle displaying restricted plates is not an apportionable vehicle. When a vehicle is non-apportionable, it’s up to each jurisdiction to determine how the jurisdiction’s laws apply.
A non-apportionable vehicle (one operating with restricted plates) may or may not be granted reciprocity outside of the base jurisdiction. This varies by state, and you need to verify whether the states where you operate have reciprocity agreements in place with your base state to recognize those restricted plates.
For example, under a reciprocal agreement between Wisconsin and Minnesota:
- Commercial vehicles that display intrastate vehicle registration (license plates) from Minnesota may operate interstate within a 30-air-mile range of the Minnesota-Wisconsin boundary line without carrying any additional registration credentials, and
- Vehicles that display Wisconsin intrastate vehicle registration (license plates) may operate interstate in Minnesota within a 30-air-mile range of the Wisconsin border.
In contrast, many jurisdictions treat farm, dealer, or transporter plates as valid only in the state of issue, requiring full IRP or other registration (regardless of a trip permit). When there’s no reciprocity agreement, vehicles not apportioned are subject to registration and fee payment according to each base jurisdiction’s general registration statutes.
Because reciprocity is inconsistent — and often misunderstood — many carriers look to trip permits as a workaround. Unfortunately, that approach usually doesn’t solve the problem.
What about trip permits?
In most cases, full IRP apportioned registration is required, and trip permits don’t override the limitations of restricted plates.
In other words, trip permits do not convert an ineligible or restricted plate into an unrestricted interstate plate.
As a result, a vehicle operating on restricted plates may still be considered improperly registered for interstate travel — even if a trip permit has been purchased.
Key to remember: Because restricted plate rules and reciprocity agreements vary by jurisdiction, carriers should verify registration requirements before operating interstate. When interstate travel is anticipated, full IRP apportioned registration is typically the safest and most compliant option.





















































