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  1. Home
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  3. Flagger Symbol Sign - W20-7A
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Choose Your Reflectivity Grade

Compare visibility, durability, and ideal applications

Type I

Engineering Grade

Ideal Use

Parking lots

Brightness

Standard

General Lifespan

7 years

Night-time Visibility

500 feet away

Type IV

High Intensity Prismatic

Ideal Use

Roadways

Brightness

High

General Lifespan

10 years

Night-time Visibility

1000 feet away

Type IX

Diamond Grade

Ideal Use

High-speed roadways

Brightness

Maximum

General Lifespan

10+ years

Night-time Visibility

1500 feet away

Product Details

Flagger Symbol Sign - W20-7A

The W20-7A Flagger Symbol Sign is an essential safety tool designed to enhance communication and visibility on construction and work zones. Constructed from reflective aluminum standard punched blanks, this sign provides clear, immediate guidance for drivers approaching areas with active road personnel. Fully compliant with DOT and MUTCD state and federal standards, the sign ensures optimal performance and regulatory adherence. Its reflective surface offers superior visibility in low-light conditions, helping to prevent potential accidents and protect road workers by alerting drivers to the presence of flaggers and ongoing road operations.

Spec • 2026
MUTCD Compliant

Sign Specifications

MUTCD Code

W20-7A

Sign Type

Construction Sign

Shape

Diamond

Standard warning sign shape

Colors

ABC

Orange background

Black legend

Compliance

MUTCD Compliant: This work zone warning sign meets federal standards per MUTCD Section 6F.16. Orange background indicates temporary traffic control.

SizeDimensionsApplication
ConventionalDefault36×36"Low-speed work zones
Freeway48×48"High-speed work zones
Compliance & Certifications

MUTCD Compliant

Federal standards

DOT Approved

State & Federal

ASTM D4956

Type III/IV/XI

10+ Years

Durability

Engineer Grade (EG)

Type: ASTM Type I

Lifespan: 5-7 years

Brightness: ~50 cd/lux/m²

Parking lots, low-speed areas, non-critical signage

Recommended

High Intensity Prismatic (HIP)

Type: ASTM Type III/IV

Lifespan: 10 years

Brightness: ~360 cd/lux/m²

Traffic signs, work zones, roadways

Diamond Grade (DG3)

Type: ASTM Type XI

Lifespan: 10-12 years

Brightness: ~580 cd/lux/m²

Critical signs, freeways, overhead signs

Install in advance of work zone per MUTCD Chapter 6F. Orange background for temporary conditions. Remove or cover when work not in progress.

MUTCD Reference: Section 6F.16

Reference: MUTCD Section 6F.16

Often Paired With

Signs commonly installed together per MUTCD guidelines

Be Prepared to Stop Sign - W3-4-O

W3-4-O

Be Prepared to Stop Sign

Road Work (distance) Sign - W20-1

W20-1

Road Work (distance) Sign

View All Warning Signs

Flagger Symbol Sign - W20-7A

Flagger Symbol Sign - W20-7A
Min: 1 • Max: 1000
Unit Price:$0.00
Quantity:× 1
Total:$0.00

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