Evaluation of traffic safety, based on micro-level behavioural data: theoretical framework and first implementation.
A traffic encounter between individual road users is a process of continuous interplay over time and space and may be seen as an elementary event with the potential to develop into an accident. This paper proposes a framework for organising all traffic encounters into a severity hierarchy based on some operational severity measure. A severity hierarchy provides a description of the safety situation and trade-off between safety and efficiency in the traffic system. As a first approach to study the encounter process, a set of indicators is proposed to describe an encounter. These indicators allow for a continuous description even if the relationship between the road users changes during the process (e.g., when they are on a collision course or leave it). Automated video analysis is suggested as a tool that will allow data collection for validation of the proposed theories.
Laureshyn
Aliaksei
A
Traffic and Roads, Department of Technology and Society, Faculty of Engineering LTH, Lund University, Box 118, 22100 Lund, Sweden. aliaksei.laureshyn@tft.lth.se
Svensson
Ase
A
Hydén
Christer
C
D000054:Acceleration / Q000009:adverse effects; D000063:Accidents, Traffic / Q000517:prevention & control* / Q000523:psychology* / Q000706:statistics & numerical data; D004779:Environment Design / Q000706:statistics & numerical data*; D006801:Humans; D015233:Models, Statistical; D018570:Risk Assessment / Q000706:statistics & numerical data*; D012449:Safety / Q000592:standards*; D013997:Time Factors; D014947:Wounds and Injuries / Q000453:epidemiology / Q000517:prevention & control