Oversize Loads and Weigh Stations: What Your Permit Says

Drivers ask it every week: do oversize loads have to stop at weigh stations? The honest answer is that it depends on the state, the station and the permit you are holding. A general rule of thumb will not settle it. The wording on the issued permit and the posted signs at the station will.

This guide is for owner-operators and small-fleet dispatchers holding an already-issued oversize or overweight permit PDF. It covers where scale and reporting conditions tend to appear in a permit, what to write down before departure, and how to put the stations on your route on one card for review. For the full page-by-page walkthrough, see how to read an oversize load permit.

JaloPermit, which publishes this guide, is a reading aid for issued permit PDFs. It is not a permit-filing service and it does not plan routes or provide navigation. The issued permit always wins.

MI 01

The short answer: plan to stop, then confirm

Treat an open weigh station as a stop unless something specific tells you otherwise. Commercial vehicle scales exist to check weight, dimensions and paperwork, and an oversize or overweight move is exactly the kind of load officers expect to see. In practice:

• Posted signs at the station govern who must enter. Many states post the classes of vehicle that must report when the scale is open.
• The permit may add its own conditions. Some permits name ports of entry or scale facilities where the load must report or where the permit is checked.
• Bypass is not automatic. Do not assume an electronic bypass signal or a habit from legal-load runs clears a permitted move. If the permit or the state's rules require reporting, report.
• When unsure, call ahead. The issuing state's permit office can tell you what applies to your permit before the driver is at the ramp.

MI 02

Where scale conditions hide in a permit

Scale and reporting language is rarely in a labeled box on page one. Look in these places:

1. General or special provisions. Reporting rules are often written as conditions alongside travel restrictions and escort rules.
2. Route description lines. Some permits name a port of entry or scale facility at a state line or on a specific segment.
3. Attachments and state addenda. Statewide conditions may arrive as a separate page or attachment that is easy to leave in the printer.
4. Weight sections. Overweight permits list the gross and axle weights the load was permitted at. Those are the numbers a scale will check against.

Here is a generic example of how a reporting clause can read. It is illustrative wording only, not taken from any real permit or customer:

Example only: "Permittee shall stop at all open weigh stations and ports of entry along the route and present this permit upon request. Weights shall not exceed those shown on this permit."

Unfamiliar wording? The OS/OW permit terms glossary explains ports of entry, special provisions and related vocabulary.

MI 03

What to have ready before the scale

• The issued permit and every attachment, in the form the issuing authority requires you to carry.
• Actual weights that match the permit. If the load was scaled before departure, compare the ticket with the gross and axle weights on the permit. A mismatch is a conversation you want to have with dispatch, not with an officer.
• Dimensions as loaded. Width, height, length and overhang should be at or under the permitted figures.
• Escort details. If escorts are required on the segment, they should be with the load. See pilot car escort requirements.
• Time-of-day awareness. A long wait at a scale can push a move into a curfew window. See how to check oversize permit curfews.

MI 04

See the stations on your route on one card

Drop the issued, text-based permit PDF into the permit decoder on the JaloPermit homepage. It turns the permit into a one-card route summary that can surface weigh stations, truck stops, curfews, escorts and low-bridge alerts for review. JaloPermit's reference data includes 870+ weigh stations and 1,732+ truck stops across the 48 contiguous states, so the driver can see where scales sit along the permitted route before departure.

• Use the station list to plan stops and timing, not to decide whether a stop is required. Signs, state rules and the permit decide that.
• Treat dashed or unresolved sections as questions. Open the original PDF and read that part directly.
• A missing station is not proof there is none. Reference data is incomplete, and stations open, close and change.

JaloPermit reads text-based permit PDFs only (not scans or image-only files). Guests get three free decodes a day with no account and no card. Logged-in users get 10 free decodes a day. After those free decodes, each one is $3.50. There is no subscription.

MI 05

Limits: the issued permit always wins

• The card is a reading aid. It summarizes what it can read from the PDF. It does not interpret law, approve a move or change any permit condition.
• The issued permit governs. If the card and the permit differ, follow the permit.
• Posted signs and officers' instructions apply on the day. No summary overrides them.
• When anything is unclear, call the issuing state DOT or permit office before you move.

Want general state context first? The free oversize permit map shows legal limits, escort notes and the permit office for each state, with no upload needed.

Questions about how JaloPermit reads a permit? Email support@jalopermit.org.

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FAQs