DOT number requirements at a glance
Federal FMCSA rules apply to commercial carriers in every state, including Iowa. Your USDOT number must be:
- Displayed on both sides of the power unit
- In a color that contrasts sharply with the vehicle
- Readable from 50 feet in daylight — no federal letter height is set; we cut 2″ as the safe floor
- Shown as “USDOT 1234567” — the letters “USDOT” before your number
These are the federal baseline standards. Iowa intrastate carriers may have additional state requirements — tell us your state at checkout and we'll match them, or verify current rules with your state DOT/DMV.
Iowa’s own rules — verified against state law
✓ Checked against Iowa statutes and regulations · last verified 2026-07-28
- Iowa intrastate carriers mark the carrier name plus the USDOT number with an IA suffix, each side, readable from 50 feet — painted or a securely attached removable sign (magnetics qualify if they stay put).
Not sure which of these hits your truck? Run the free 60‑second compliance check — answer a few questions and it builds your exact decal list, numbers filled in.
Get compliant — shop USDOT decals →
Rules can change — the authority on current requirements is your state agency (Iowa DOT — Office of Motor Carrier Services).
What we cut for Iowa carriers
USDOT Number Decals
Your USDOT number cut to FMCSA spec — set of 2, both sides.
$16+MC Number Decals
Motor Carrier (MC) number lettering for interstate carriers.
$16+GVW / GVWR Decals
Gross weight-rating decals for trucks, trailers & dumps.
$16+Full Compliance Kit
Company name + USDOT + MC + GVW, all cut to match.
$54.95+Truck Door Lettering
Business name & fleet unit numbers — pro look, no wrap.
$18.95+Serving trucking across Iowa
We ship to owner-operators, contractors, and fleets throughout Iowa — including Des Moines, Cedar Rapids and Davenport — with a 1–2 business day turnaround. Every decal is cut on commercial-grade outdoor vinyl rated for 5+ years, weeded, taped, and ready to peel and stick.
Iowa DOT decal FAQ
Do I need a USDOT number in Iowa?
If you operate a commercial vehicle over 10,001 lbs, haul hazardous materials, or carry passengers for hire, federal law requires a USDOT number displayed on both sides of the vehicle — and many Iowa intrastate carriers need one too. We cut yours exactly as it should read.
What size do USDOT decals have to be?
FMCSA’s actual standard is legibility — readable from 50 feet in daylight, in a color that contrasts sharply with your truck, with “USDOT” shown before the number. Two-inch letters are the industry floor that reliably clears that bar, and some states set their own minimum on top of the federal rule. We cut 2″ by default and also cut 3″ and 4″ for larger trucks.
How fast can you ship decals to Iowa?
We make every order in 1–2 business days and ship nationwide, so most Iowa carriers have their decals in hand within a few days. Everything arrives weeded, taped, and ready to apply.
Can you match Iowa's requirements?
Yes. Tell us your state and vehicle at checkout and we cut to your Iowa intrastate spec. Not sure what you need? Message us — 20 years in vehicle graphics means we'll get it right.
Not sure exactly what Iowa requires?
Answer 7 quick questions and get the exact decal list for your truck — federal and Iowa rules checked against the actual regulations, sources cited, sizes included.
Run the free compliance check →Ready to get your Iowa trucks compliant?
Cut to spec, shipped fast, and backed by our guarantee: cut right or we remake it free.
Shop all decals →