Citation

Jacob B, Violette E. Procedia Soc. Behav. Sci. 2012; 48: 1805-1814.

Copyright

(Copyright © 2012, Elsevier Publishing)

DOI

10.1016/j.sbspro.2012.06.1155

PMID

unavailable

Abstract

Because of the low rates of killed people per km.passenger, and of the multiple causes of an accident, the accident statistics alone are of very little use to support research aiming to further reduce the mortality. Therefore, research works were undertaken on vehicle trajectory modelling and measurement to evaluate interactions between vehicle, drivers and road infrastructure, and to identify "quasi accidents" or "near miss", as indicators of inappropriate driving behaviours or infrastructure risky zones. The trajectory means vehicle location, speed, acceleration and jerk, as time functions. Numerous technologies are available for trajectory measurement, used in roadside and on-board observatories. This paper shows the benefit of using trajectory observatories, their current limitations and perspectives of development, gives an overview of the available results on modelling and measurement techniques, from several projects supported by the French program PREDIT, and reports some case studies for bends, intersections, and low volume roads.