46 C.F.R. § 164.018-3 Classification.
Title 46 - Shipping
The following types of retroreflective material are approved under this specification: (a) Type I—Material used on flexible surfaces and rigid surfaces, except rigid surfaces that are continuously exposed. (b) Type II—Weather resistant material used on continuously exposed rigid surfaces.
Title 46: Shipping
PART 164—MATERIALS
Subpart 164.018—Retroreflective Material for Lifesaving Equipment
§ 164.018-3 Classification.