Scale Ticket Management From the Scale to the Invoice

Scale ticket management covers each ticket from the scale house to the invoice and through its retention period. One ticket is the record behind the producer’s material charge, the hauler’s haul charge and, on public work, the contractor’s pay quantity: on Iowa DOT jobs, inspectors collect each day’s tickets to determine pay quantities [1]. The example throughout is one order: 5 trucks running 5 loads each, 25 tickets.

Scale

Every state has adopted NIST Handbook 44, the technical code for commercial scales. NIST names an active NTEP Certificate of Conformance as the proof that a scale meets it, and a scale must be inspected and approved by the state before commercial use [2]. Montana, for example, tests every commercial truck scale every year [3]. Between tests, Handbook 44 requires the owner to keep the scale in proper operating condition and correct unstable readings [4].

Any time a load cell or junction box is changed or a check rod is adjusted, the scale needs calibration with a test truck or cart [5]. Under the model regulation in NIST Handbook 130, a registered service agency that puts a new or officially rejected scale into service sends the state a Placed in Service Report within 24 hours and gives the owner a copy [6]. DOT specs can add conditions. Indiana DOT pay weights must come from scales tested and sealed by the state within 1 year before use, and a scale that has been repaired, dismantled or moved must be tested again before it weighs pay material [7]. Keep the latest inspection report and every Placed in Service Report at the scale house, so any ticket can be tied to an approved scale.

Tare

An error in a tare carries into every ticket that uses it. Stored tares are a documented problem. NIST and state officials ran a survey from June 2005 to July 2006. More than 80% of the stored vehicle tares they checked were off by more than 0.2%, the approximate accuracy a vehicle scale has to hold, or 160 lb on an 80,000 lb truck [8]. Too few states reported for a national conclusion, and some of the largest errors were on scales within tolerance [8]. Several states reported that the firms with the lowest error rates weighed trucks in and out on every transaction, and that other firms reweighed empty trucks several times a day to keep errors down [8]. Indiana and Iowa DOT work requires each truck hauling pay material by weight to be weighed empty daily [7][1].

As an illustration: if each of the 5 trucks on the example order has a stored tare 400 lb below its true empty weight, each of the 25 tickets overstates the net by 400 lb, and the order bills 10,000 lb, or 5 tons, that was never delivered. Weigh brokered and one-time trucks in and out on every load, and re-tare your own trucks at least daily.

Ticket fields

Almost every state based its weights and measures law on the model law published in NIST Handbook 130 [9]. For bulk sales where buyer and seller are not both present at the weighing, the model law requires a delivery ticket with the names and addresses of both, the date, the quantity, the unit price unless otherwise agreed, and the commodity [9]. California requires a weighmaster certificate whenever payment depends on a weight, numbered consecutively and showing the vehicle, the commodity, the unit, and gross, tare and net where both weights were taken. Issuing one with a required field missing is unlawful [10]. Indiana DOT tickets add the contract number, source, mix design number for asphalt, truck number and time weighed [7].

Print the full set on every ticket, public job or not, and set the scale software to require a job and a truck number before a ticket prints:

• Consecutive ticket number
• Date, time and scale location
• Customer, job or contract number, and PO
• Material, with the mix design number on asphalt
• Truck number and hauling company
• Gross, tare and net with the unit, and whether the tare was weighed or stored

Capture

The ticket should reach the load record when the truck leaves the scale. When the scale system can issue an electronic ticket, Handbook 44 lets the customer take it instead of, or along with, paper [4]. FHWA’s e-ticketing plan describes paper ticketing as multiple handoffs and manual entry, and lists lost or damaged tickets as common [11]. In Tread’s e-ticketing, a ticket arrives as a Driver App photo, a texted photo or a scale-house integration feed, and AI reads the ticket number, weight, material and times and matches it to the dispatched load for a person to confirm or edit before approval [12]. Use one capture procedure for every truck on the order, brokered trucks included. For haulers, see trucking ticket management software.

Reconciling each day

Iowa DOT inspectors sign the ticket for each accepted load, total each day’s quantities, check them against contract records and resolve discrepancies promptly [1]. Indiana requires the contractor to give the engineer every delivery ticket by the next business day and does not pay for undocumented material. If the gap is not fixed within 6 weeks of delivery, the whole estimate payment can be withheld [7]. Run that check daily for every customer. On the example order it covers:

• 25 tickets for 25 dispatched loads
• Every truck number on a ticket belongs to one of the 5 trucks on the order
• Material, job and customer match the order on every ticket
• No ticket number appears twice, and every gap in the numbering is a void kept on file
• Each net weight falls in the range that truck normally hauls

When a customer’s scale disagrees with yours, compare the difference with the roughly 0.2% each vehicle scale is allowed [8] before treating either ticket as wrong.

Invoice

Bill from approved tickets only, with the ticket number on each invoice line. On the example order, the material quantity is the sum of the 25 net weights, a per-ton haul invoice uses the same sum, and a per-load haul invoice counts 25 loads. When the agency pays from the tickets its inspectors accepted, as Iowa DOT does [1], supplier and hauler invoices to the contractor should total the same tons, and any difference traces to a specific ticket number.

Corrections

Correct a wrong ticket on the record and keep the original. Handbook 44 allows a manual weight on a vehicle scale ticket only to correct an erroneous ticket, and the ticket has to label it “Manual Weight”, “Manual Wt” or “MAN WT” [13]. California requires a correction certificate to every party that received the original, carrying the original number and the reason for the correction, with “INCORRECT” written across the original [10].

Retention

Keep each ticket for the longest period any rule or contract sets for any party to it. California weighmasters keep true copies of every certificate, plus voided certificates and worksheets, for 4 years [10]. Motor carriers and brokers under FMCSA’s records rules keep tickets on the weighing of freight for 3 years, in any format that accurately reproduces all of the information, so a legible image of the full ticket qualifies [14]. On Indiana DOT contracts, if a contractor, subcontractor or supplier cannot produce the records to verify a claim, the unverified part is waived [7].

Sources

1. Iowa Department of Transportation, Construction Manual CM 3.50, Weighing Equipment for Determination of Pay Quantities (revised January 31, 2018). https://ia.iowadot.gov/erl/current/cm/content/CM%203.50.htm
2. NIST Office of Weights and Measures, Weighing and Scales FAQs. https://www.nist.gov/pml/owm/faqs/weighing-and-scales-faqs
3. Montana Department of Labor and Industry, Weights and Measures, Scales and Meters. https://bsd.dli.mt.gov/weights-and-measures/Scales-and-Meters
4. NIST Handbook 44, 2026 edition, Section 1.10 General Code (G-S.5.6, G-UR.4.1, G-UR.4.2). https://www.nist.gov/document/2026-nist-handbook-44-section-1
5. Pit & Quarry, How to get more life out of your truck scale, Jonathan Sabo, July 26, 2024. https://www.pitandquarry.com/key-practices-to-get-more-life-out-of-your-truck-scale/
6. NIST Handbook 130, 2026 edition, IV.D Uniform Regulation for the Voluntary Registration of Servicepersons and Service Agencies, Sections 7 and 8. https://www.nist.gov/document/2026-hb-130-section-iv-d
7. Indiana Department of Transportation, 2026 Standard Specifications, Division 100 (103.01, 105.16, 106.01(b), 109.01(b)), for lettings from September 1, 2025. https://www.in.gov/dot/div/contracts/standards/book/sep25/100-2026.pdf
8. NIST Office of Weights and Measures, National Stored Tare Vehicle Study Concludes, Tom Coleman, November 2006. https://www.nist.gov/document/a024pdf
9. NIST Handbook 130, 2026 edition, III.A Uniform Weights and Measures Law (Background; Section 17, Sale from Bulk). https://www.nist.gov/system/files/documents/2025/12/23/2026_HB130-III_A_W%26M_Law-20251215.pdf
10. California Business and Professions Code, Division 5, Chapter 7, Weighmasters (sections 12711, 12713, 12714.5, 12715, 12716, 12716.5). https://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=BPC&division=5.&title=&part=&chapter=7.&article=
11. Federal Highway Administration, e-Ticketing Implementation Plan, FHWA-HRT-22-045, December 2021. https://www.fhwa.dot.gov/publications/research/infrastructure/pavements/22045/22045.pdf
12. Tread Docs, Track Drivers and Collect Tickets. https://docs.tread.ai/workflows/track-drivers-collect-tickets
13. NIST Handbook 44, 2026 edition, Section 2.20 Scales (S.1.12, UR.3.10). https://www.nist.gov/document/2026-nist-handbook-44-section-220
14. eCFR, 49 CFR Part 379, Preservation of Records (379.1, 379.7, Appendix A item J.4). https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-379