DualCompliCube reflector: A novel reflex reflector design for dual standard compliance and enhanced automotive safety

Abstract

This paper performs a comparative analysis of the retro-reflective efficacy of two reflector designs: the DualCompliCube structure and the conventional structure, evaluated under both European Economic Commission for Europe (ECE) and the US Society of Automotive Engineers (SAE) standards across various incident angles. The findings demonstrate that the DualCompliCube structure consistently outperforms the conventional structure, achieving up to 70 % greater luminous intensity at a 0° incident angle and enhancements ranging from 69 % to 87 % at non-zero angles under the ECE standard. Even at broader angles, such as 20° Left and 20° Right, the DualCompliCube structure exhibits improvements of up to 83 %. The DualCompliCube structure's innovative design optimizes dihedral angles, enhances light distribution, and maintains superior visibility, yielding modest yet consistent improvements of up to 6 % higher Ri values compared to conventional structures. This study demonstrates that the DualCompliCube structure effectively meets the stringent demands of both ECE and SAE standards, thereby improving safety and visibility across various driving conditions.