Clothing color of surrogate Bicyclist for Pre-Collision System evaluation

Bicyclist Pre-Collision Systems (BPCS) for helping avoid and/or mitigate bicyclist crashes have been equipped on some production vehicles. To support the standardized performance evaluation of BPCS, a surrogate bicyclist has been developed by the Transportation Active Safety Institute (TASI) at Indiana University-Purdue University Indianapolis (IUPUI). The surrogate bicyclist was designed to have representative visual and radar characteristics of real bicyclists in the United States. One question to be answered in surrogate bicyclist development is what the representative clothing color should be. This paper presents an approach to determine the clothing color of surrogate bicyclist for the standard evaluation of BPCS. The clothing color of bicyclists was gathered from the TASI-110 car naturalistic driving data collected in the Greater Indianapolis area. A clustering algorithm was used to determine the representative clothing colors of bicyclists.