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ASTM D4956

ASTM D4956 Retroreflective Sheeting Standard

Regulation ASTM D4956 · Canada

§The Law

ASTM D4956Regulation ASTM D4956

ASTM D4956 classifies retroreflective sheeting into types (I through XI) based on reflectivity performance, with Type I being standard engineer grade and higher types for premium applications.

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Plain English

ASTM D4956 is the benchmark standard for retroreflective sheeting. Type I is standard engineer grade; higher types have better reflectivity for highway signs and high-visibility applications.

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Specific Requirements

Type I — Engineer Grade (most common for vehicles)

Type III/IV — High Intensity Prismatic

Type XI — Diamond Grade prismatic

Transport Canada references ASTM D4956 for compliance

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📚Sources & Authority

Every claim on this page is backed by official government legislation and verified industry sources. Last verified: March 2026.

All sources are official government publications or recognized industry authorities. Links verified March 2026. If you find a broken link, let us know.

See Also — Related Regulations

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Regulation Quick Facts

Regulation
ASTM D4956
Jurisdiction
🇨🇦 Canada
Category
Compliance Materials Standards
View Official Government Source
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