For the US market, reflective tape must strictly adhere to DOT-C2 standards, which require specific alternating patterns of red and white (silver) and a width of 2 inches. In Europe, products must comply with ECE R104 regulations, which categorize tapes into Classes C, D, and E based on their visibility levels. Always verify that the certification mark (e.g., DOT-C2 or E-mark) is permanently laser-etched onto the surface of the tape every few inches to ensure legality during roadside inspections.