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  3. Time Of Day Sign - S4-1
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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

Time Of Day Sign - S4-1

Our Time Of Day Sign provides critical safety and regulatory guidance for traffic management and parking control. Constructed on standard punched aluminum blanks with high-intensity reflective material, these signs deliver clear visibility in all lighting conditions and environmental settings. Engineered to meet DOT and MUTCD state and federal standards, the S4-1 model ensures reliable performance and compliance with time-specific traffic regulations. The durable aluminum construction and reflective surface allows for easy installation across various surfaces while maintaining maximum legibility for drivers and pedestrians.

Technical Specifications

- Model: S4-1 - Material: Aluminum with high-intensity reflective coating - Standards: DOT and MUTCD compliant

Spec • 2026
MUTCD Compliant

Sign Specifications

MUTCD Code

S4-1

Sign Type

School Sign

Shape

Rectangle (Horizontal)

Guide and information signs

Colors

ABC

Fluorescent Yellow-Green background

Black legend

Compliance

MUTCD Compliant: Reduced School Speed Ahead sign per Section 7B.15. Fluorescent yellow-green background required.

SizeDimensionsApplication
StandardDefault36x36"Conventional roads
Large48x48"Multi-lane roads
Compliance & Certifications

MUTCD Compliant

Federal standards

DOT Approved

State & Federal

ASTM D4956

Type III/IV/XI

10+ Years

Durability

High Intensity Prismatic (HIP)

Type: ASTM Type III/IV

Lifespan: 10 years

Brightness: ~360 cd/lux/m²

Traffic signs, work zones, roadways

Recommended

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 reduced school speed zone. Diamond shape with FYG background.

MUTCD Reference: Section 7B.15

Reference: MUTCD Section 7B.15

Often Paired With

Signs commonly installed together per MUTCD guidelines

S1-1 School Crossing - S1-1

S1-1

S1-1 School Crossing

View All Warning Signs

Time Of Day Sign - S4-1

Time Of Day Sign - S4-1
Min: 1 • Max: 1000
Unit Price:$0.00
Quantity:× 1
Total:$0.00

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