Traffic Signs
Regulatory Signs
Warning Signs
Posts & Hardware
TRAFFIC SIGNS
  • Regulatory
  • Warning
  • School Zone
  • Construction
  • Guide Signs
  • Posts & Hardware
PARKING SIGNS
  • All Parking Signs
  • No Parking
  • Handicapped
  • Reserved
  • Custom Signs
SUPPORT
  • Contact Us
  • FAQ
  • Shipping
  • Returns
  • Track Order
COMPANY
  • About Us
  • Use Cases
  • Get a Quote
  • Sitemap
  • Privacy
  • Terms

© 2026 TrafficSigns.com — A division of Traffic Sign Corporation

1-877-936-9998service@trafficsigns.com

Size Guide

Find the right size for your parking and traffic signs

Custom Sizes Available

These are popular standard sizes based on MUTCD guidelines. We can produce signs in any custom size — contact us for special dimensions.

Parking Sign Sizes

Supplemental

12" × 18"

Supplemental and auxiliary signs

POPULAR

Standard

18" × 24"

Most common parking sign size

POPULAR

Large

24" × 30"

High-visibility parking areas

POPULAR

Oversized

24" × 36"

Commercial lots, large text

Extra Large

30" × 36"

Highway and roadside applications

Custom

Any Size

Custom dimensions available on request

Traffic Sign Sizes

Warning Diamond

30" × 30"

Common uses: Standard warning signs

Large Warning Diamond

36" × 36"

Common uses: High-speed road warnings

Regulatory

24" × 30"

Common uses: Speed limits, stop signs, yield

Large Regulatory

30" × 36"

Common uses: Highway regulatory signs

Street Name

6" × 24"

Common uses: Standard street name blades

Posts & Mounting Hardware

U-Channel Post

2 lb/ft

Popular for: Standard sign mounting, easy installation

Square Post

2" × 2"

Popular for: Heavy-duty sign support

Round Post

2-3/8" diameter

Popular for: Decorative and residential areas

Wall Mount Bracket

Various

Popular for: Building and wall-mounted signs

Tips for Choosing the Right Size

1

Consider the Location

Think about where the sign will be installed. Indoor signs can use non-reflective materials, while roadside signs require reflective sheeting.

2

Check MUTCD Requirements

Many signs must meet Manual on Uniform Traffic Control Devices (MUTCD) standards for size, color, and reflectivity.

3

Choose the Right Material

Standard .080" aluminum is ideal for most applications. Consider heavier gauge for high-wind areas or larger signs.

4

Plan Your Mounting

Factor in post type and mounting height when selecting sign size. Most parking signs are mounted at 7' height.

Reflectivity Grades

Type I
Engineer Grade

Standard reflectivity for low-speed areas

Type III
High-Intensity Prismatic

Recommended for most applications

Type XI
Diamond Grade

Premium visibility for highways

Need a Custom Size?

We can create signs in virtually any size! From small supplemental plaques to large highway signs, we've got you covered.

Browse SignsAsk a Question