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  1. Home
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  3. Stay In Line Sign - R4-9
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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

Stay In Line Sign - R4-9

Designed to maintain order and enhance safety on roadways and parking lots, this Stay In Line Sign provides critical guidance for drivers. The sign's clear messaging helps direct traffic flow and reduce potential accident risks by keeping vehicles in their designated lanes. Constructed from reflective aluminum with high-visibility materials, the sign meets all DOT and MUTCD state and federal standards. Its R4-9 designation ensures compliance and maximum effectiveness in various traffic management scenarios. The durable, standard punched blank design guarantees long-lasting performance in diverse environmental conditions.

Spec • 2026
MUTCD Compliant

Sign Specifications

MUTCD Code

R4-9

Sign Type

Regulatory Sign

Shape

Rectangle (Vertical)

Standard regulatory sign shape

Colors

ABC

White background

Black legend

Compliance

MUTCD Compliant: Movement regulation sign per MUTCD Section 2B.27.

SizeDimensionsApplication
StandardDefault18x24"Conventional
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 where the regulation applies.

MUTCD Reference: Section 2B.27

Reference: MUTCD Section 2B.27

Often Paired With

Signs commonly installed together per MUTCD guidelines

Do Not Enter Sign - R5-1

R5-1

Do Not Enter Sign

Speed Limit Sign - R2-1

R2-1

Speed Limit Sign

Stop Signs - R1-1

R1-1

Stop Signs

4 Way Stop Sign - R1-3

R1-3

4 Way Stop Sign

One Way Right Sign - R6-1R

R6-1R

One Way Right Sign

Truck Speed Limit Sign - R2-2

R2-2

Truck Speed Limit Sign

View All Regulatory Signs

Stay In Line Sign - R4-9

Stay In Line Sign - R4-9
Min: 1 • Max: 1000
Unit Price:$0.00
Quantity:× 1
Total:$0.00

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