How many tetrahedron-shaped retroreflective trim pieces are around the crown, and what are they made of?

• A. Six pieces of reflective tape
• B. Four pieces of vinyl trim
• C. Eight pieces of 3M Scotchlite
• D. Twelve pieces of glass bead

Answer: (C)

Retroreflective trim around the crown is designed to maximize visibility by returning light to its source from all directions. There are eight tetrahedron-shaped pieces around the crown, and they’re made of 3M Scotchlite retroreflective material. This combination ensures bright, durable reflectivity when illuminated by lights (like helmet beams or vehicle headlights), improving recognition in low-light or smoky conditions. The eight-piece arrangement provides even coverage around the head, which a smaller number would miss, and 3M Scotchlite is preferred over older options like glass bead or vinyl trim for modern PPE because of its durability and strong, consistent reflectivity.