Time-Based Analysis of Road User Behaviour in Normal and Critical Encounters

摘要

Various traffic conflicts techniques at least partly use a time-related measuresuch as Time-To-Collision or Post-Encroachment-Time for defining the severity of traffic conflicts. However, the threshold values used appear to be mainly intuitively determined instead of based on systematic research. Highly trained observers appear to be able to operate rather consistently in detecting and classifying serious conflicts. But in the transition area between normal encounters and conflicts observer subjectivity becomes increasingly important. Because in the study the emphasis will be on a detailed analysis of road user behavior in both normal and critical situations, the use of individual observers is rejected and it is considered essential to develop an objective observation and analysis method enabling a quantification of relevant characteristics of interactions with other road users or with the environment.