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  1. Home
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  3. Runaway Truck Ramp Sign - W7-4

Runaway Truck Ramp Sign - W7-4

Runaway Truck Ramp Sign - W7-4
Min: 1 • Max: 1000

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Product Details

Runaway Truck Ramp Sign - W7-4

Steep mountain roads pose significant risks for commercial truck drivers, particularly when brake failure becomes a potential hazard. This professional-grade runaway truck ramp sign provides critical safety information for operators navigating challenging terrain, alerting them to emergency stopping areas designed to prevent catastrophic accidents. Constructed on durable aluminum blanks with reflective surfaces, the W7-4 sign meets both DOT and MUTCD state and federal standards. Available in high intensity and diamond grade reflective options, the sign ensures maximum visibility under diverse environmental conditions, helping drivers make split-second safety decisions when vehicle control becomes compromised.

Spec • 2026
MUTCD Compliant

Sign Specifications

MUTCD Code

W7-4

Sign Type

Warning Sign

Shape

Diamond

Standard warning sign shape

Colors

ABC

Yellow background

Black legend

Compliance

MUTCD Compliant: This hill warning sign meets federal standards per MUTCD Section 2C.26. Used to warn of steep grades ahead.

SizeDimensionsApplication
Conventional RoadDefault30×30"Two-lane roads, residential areas
Multi-Lane36×36"Multi-lane roads, higher speed limits
Expressway48×48"Expressways, freeways, high-speed 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 at top of grade for downhill warning, or in advance for uphill notification. Required when grade exceeds: 5% for 3000ft, 6% for 2000ft, 7% for 1000ft, 8% for 750ft, 9% for 500ft.

MUTCD Reference: Section 2C.26

Reference: MUTCD Section 2C.26

Often Paired With

Signs commonly installed together per MUTCD guidelines

Right Turn Arrow Sign - W1-1R

W1-1R

Right Turn Arrow Sign

Road Work (distance) Sign - W20-1

W20-1

Road Work (distance) Sign

Pedestrian Crossing Sign - W11-2

W11-2

Pedestrian Crossing Sign

Road Closed (distance) Sign - W20-3

W20-3

Road Closed (distance) Sign

Stop Ahead (Symbol) Sign - W3-1

W3-1

Stop Ahead (Symbol) Sign

Workers Ahead Sign - W21-1

W21-1

Workers Ahead Sign

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