title: Exposure to lateral collision in signalized intersections with protected left turn under different traffic control strategies.
abstract: This paper proposes an original definition of the exposure to lateral collision in signalized intersections and discusses the results of a real world experiment. This exposure is defined as the duration of situations where the stream that is given the right-of-way goes through the conflict zone while road users are waiting in the cross-traffic approach. This measure, obtained from video sensors, makes it possible to compare different operating conditions such as different traffic signal strategies. The data from a real world experiment is used, where the adaptive real-time strategy CRONOS (ContRol Of Networks by Optimization of Switchovers) and a time-plan strategy with vehicle-actuated ranges alternately controlled an isolated intersection near Paris. Hourly samples with similar traffic volumes are compared and the exposure to lateral collision is different in various areas of the intersection and various traffic conditions for the two strategies. The total exposure under peak hour traffic conditions drops by roughly 5 min/h with the CRONOS strategy compared to the time-plan strategy, which occurs mostly on entry streams. The results are analyzed through the decomposition of cycles in phase sequences and recommendations are made for traffic control strategies.
authors.affiliation: Université Paris-Est, IFSTTAR, GRETTIA, 2 rue de la Butte Verte, 93166 Noisy-le-Grand Cedex, France. Electronic address: sophie.midenet@ifsttar.fr.
authors.forename: Sophie
authors.initials: S
authors.lastname: Midenet
authors.affiliation: Ecole Polytechnique de Montréal, C.P. 6079, succ. Centre-ville, H3C 3A7 Montréal, Québec, Canada. Electronic address: nicolas.saunier@polymtl.ca.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Saunier
authors.affiliation: Université Paris-Est, IFSTTAR, GRETTIA, 25 Allée des Marronniers, 78000 Versailles, France. Electronic address: florence.boillot@ifsttar.fr.
authors.forename: Florence
authors.initials: F
authors.lastname: Boillot
mesh_terms: D000063:Accidents, Traffic / Q000517:prevention & control* / Q000706:statistics & numerical data; D001334:Automobile Driving / Q000523:psychology; D004779:Environment Design; D004867:Equipment Design; D006801:Humans; D012926:Social Control, Formal; D013597:Systems Analysis