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  3. National Scenic Byways Sign - D6-4a
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Sign Specifications

MUTCD Code

D6-4A

Sign Type

Guide Sign

Shape

Rectangle (Horizontal)

Guide and information signs

Colors

ABC

Green background

White legend

Compliance

MUTCD Compliant: Scenic/Cultural sign per Section 2D.50. White legend on brown background.

SizeDimensionsApplication
StandardDefault30x24"Conventional roads
Large48x36"Multi-lane roads
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 to identify cultural, scenic, or historic areas. Brown background.

MUTCD Reference: Section 2D.50

Reference: MUTCD Section 2D.50

Often Paired With

Signs commonly installed together per MUTCD guidelines

Extruded Street Name Signs - EXSS69

EXSS69

Extruded Street Name Signs

6" Street Signs - 6-Inss

6" Street Signs - 6-Inss

9" Street Signs - 9-Inss

9" Street Signs - 9-Inss

24-Hour (Plaque) Sign - D9-20aP

24-Hour (Plaque) Sign - D9-20aP

4WD Vehicle Road/Trail Sign - RL-140

RL-140

4WD Vehicle Road/Trail Sign

Airport Symbol Sign - RA-010

RA-010

Airport Symbol Sign

View All Guide Signs

National Scenic Byways Sign - D6-4a

National Scenic Byways Sign - D6-4a
Min: 1 • Max: 1000
Unit Price:$0.00
Quantity:× 1
Total:$0.00

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Product Details

National Scenic Byways Sign - D6-4a

The National Scenic Byways sign (D6-4a) is designed to highlight roads of exceptional archeological, cultural, historic, natural, recreational, and scenic significance. Designated by the U.S. Secretary of Transportation, these distinctive signs provide travelers with important wayfinding information about exceptional roadways. Constructed with high-quality aluminum featuring radius corners and 3/8" prepunched holes, the sign meets all DOT and MUTCD state and federal guidelines. The sign utilizes high-intensity and diamond grade reflective sheeting to ensure maximum visibility and legibility for road users, allowing clear identification of National Scenic Byways and All-American Roads.

Spec • 2026
MUTCD Compliant