🛻 FMCSA 49 CFR § 390.21 · Federally Compliant

USDOT
Decals
Truck-Ready

Custom USDOT number combo decals — up to 4 lines on one ready-to-apply sheet. Company name, USDOT, MC, KYU, VIN. Pick the font, pick the color, see it instantly. Cut from 9-year outdoor vinyl in Salt Lake City.

24" STONE TRUCKING USDOT 12345678 MC 1234567 KYU 12345678
24" × 14" Standard · Live preview below ↓

Federal Marking Requirements

Per 49 CFR § 390.21 — Marking of self-propelled CMVs and intermodal equipment. Every commercial motor vehicle in interstate commerce must comply.

Requirement What it means Citation
Legal Name Legal name or single trade name of the motor carrier — displayed on both sides of the vehicle. § 390.21(b)(1)
USDOT Number USDOT number must follow the legal name. MC number, KYU, or state DOT may be added as additional lines. § 390.21(b)(2)
Letter Height ≥ 2" tall — readable from 50 feet during daylight while stationary. Required § 390.21(d)(1)
Contrast Marking color must contrast sharply with the vehicle background. 14 vinyl colors available. § 390.21(d)(2)
Legibility Markings must be maintained legible at all times. Our 9-year vinyl is UV + weather rated. Required § 390.21(d)(3)
Placement Markings on both sides of the power unit. Order as a pair for 2-door coverage. § 390.21(a)

Live Configurator

Type, choose, watch. Everything updates in real time on the right. What you see is exactly what gets cut from die-cut adhesive vinyl.

1

Your Lettering

2

Style & Size

3

Add-Ons

Four Sizes, One Application

All sizes ship as a single combo sheet — pre-spaced, ready to apply in one pass. Pick the size that fits your door panel.

18" × 10" From $14.95 STONE TRUCKING USDOT 12345678 MC 1234567 KYU 12345678
Compact
For smaller cabs, sprinter vans, service trucks. Meets the 2" letter rule with room to spare on lines 1 and 2.
  • 4 lines of lettering
  • 9-year outdoor vinyl
  • Pre-spaced transfer sheet
  • Cleared § 390.21(d)(1)
24" × 14" Most Popular STONE TRUCKING USDOT 12345678 MC 1234567 KYU 12345678
Standard
The default for Class 7-8 trucks, day cabs, and dump trucks. Industry-standard door size — easy to install solo in 10 minutes.
  • 4 lines of lettering
  • 9-year outdoor vinyl
  • Pre-spaced transfer sheet
  • Cleared § 390.21(d)(1)
30" × 18" From $26.50 STONE TRUCKING USDOT 12345678 MC 1234567 KYU 12345678
Large
For sleepers, big rigs, tow trucks with full-side doors. Maximum visibility from a distance, ideal for fleet branding.
  • 4 lines of lettering
  • 9-year outdoor vinyl
  • Pre-spaced transfer sheet
  • Cleared § 390.21(d)(1)

Fleet of 5+ Trucks?

Volume pricing for fleets — same shop, same day, one quote. Send your unit list and we'll match each truck's USDOT/MC/KYU into a single batch. Production cleared in 24 hours.

49 CFR § 390.21 Summary

The Federal Motor Carrier Safety Regulations require every commercial motor vehicle operating in interstate commerce to display its legal name and USDOT number on both sides of the power unit. Every decal we cut meets these specifications.

Source: eCFR — § 390.21 Marking of self-propelled CMVs

  • Legal name or single trade name on both sides
  • USDOT number following the legal name
  • Letters ≥ 2" tall — readable from 50 ft
  • Color must contrast sharply with vehicle
  • Markings maintained legible at all times
  • MC, KYU, VIN, or state DOT on additional lines

What You Receive

  • Die-cut vinyl decal — pre-spaced, one transfer sheet
  • 9-year outdoor adhesive — UV + weather rated
  • Your exact text — what you type is what we cut
  • 14 color options — including metallic + chrome
  • Optional reflective — night-visibility upgrade
  • Install video — step-by-step in your confirmation
Pair Deal — Both Doors

Order as a pair and save 10% — § 390.21(a) requires marking on both sides anyway.

Frequently Asked

Will this decal pass FMCSA inspection?

Yes. Every order is built to 49 CFR § 390.21 specs — letter heights ≥ 2", contrasting colors, weather-resistant 9-year vinyl. If your inspector ever flags it, we reprint at no charge.

How long does production take?

One business day in our Salt Lake City shop, then standard shipping (2-4 days domestic). Most customers receive 3-5 days door-to-door. Uncheck the "Email proof" option for fastest turnaround.

Can I include my phone number, website, or VIN?

Absolutely — lines 3 and 4 accept anything: phone, website, VIN, unit number, state DOT, KYU. We cut exactly what you type.

Standard vs Reflective — what's the difference?

Standard vinyl reads great in daylight. Reflective vinyl adds glass microbeads that return headlight light, making your numbers readable at night from 100+ feet. Required by some carriers and DOT auditors, recommended for any night-operating vehicle.

How do I install it?

Clean the door, peel the backing, position the transfer sheet, squeegee from center outward, remove the transfer paper. Total time: ~10 minutes per side. Wet method (a spray bottle of soapy water) makes positioning easier. Video link included in your order confirmation.

How do I pick a color that works with my truck?

That's what the live preview is for — match the contrast to your vehicle. Dark trucks: white, yellow, silver, chrome. Light trucks: black, navy, maroon. When in doubt, white or black always work and meet § 390.21(d)(2).

I need decals for a whole fleet — discount?

Yes. 5+ vehicles get fleet pricing. Email orders@ongraphics.us with your unit count and each truck's USDOT/MC/KYU — we'll send a quote within hours.

Do you also make towing signs for parking lots?

Yes — see our Utah Towing Signs page. We're the same shop and ship from Salt Lake City. If you tow non-consent in Utah, you'll need both the USDOT decals on your trucks and § 7 / § 8 signage on the lots you patrol.