Coherence analysis of road safe speed and driving behaviour from floating car data. Issue 9 (24th July 2020)

• Record Type: Journal Article
• Authors: Colombaroni, Chiara; Fusco, Gaetano; Isaenko, Natalia
• Is Part Of: IET intelligent transport systems. Volume 14:Issue 9(2020)
• Page Start: 985
• Page End: 992
• Publication Date: 2020-07-24
• Subjects: geometry -- road safety -- road traffic -- road accidents -- intelligent transportation systems; safety measures -- support drivers -- on‐board speed advisory system -- coherence analysis -- road safe speed -- driving behaviour -- car data -- safety conditions -- road network -- Intelligent Transportation Systems -- classical system driver–vehicle–infrastructure -- general road safety analysis framework -- safety monitoring -- critical points -- safety enforcement schemes -- safety driver advisory unit -- smart road safety analysis -- road safety performances process -- road geometry parameters -- speeds distributions; Intelligent transportation systems -- Periodicals; Electronics in transportation -- Periodicals; 388.31205
• DOI: 10.1049/iet-its.2019.0700
• Languages: English
• ISSNs: 1751-956X

Abstract

Abstract : In the Intelligent Transportation Systems, integration of different components of the classical driver‐vehicle‐infrastructure system is supported by advances in technology and communications. This study presents a general road safety analysis framework that exploits different types of data on traffic, geometry, and accidents to develop a Road Safety Analysis Center and an on‐board Road Safety Driver Advisory. The Road Safety Analysis Center considers different sources of data: accident inventories, road geometry, and floating car data, which reveal drivers' behavior. Floating car data are also exploited to derive mathematically the longitudinal parameters of ancient roads, which are crucial to estimate safety conditions in curves. The critical points of the network are revealed by an aggregate analysis of accidents distribution on the roads, while the drivers' behaviour is addressed on a disaggregated level, by the evaluation of speeds distributions with a dense spatial detail. The comparison between speeds distributions, safety conditions, and accident occurrence is useful to individuate the portions of the network to be enforced with safety measures and support drivers with an advanced onboard speed advisory system. This methodology is applied to several extra‐urban roads in the Latium region, Italy, to individuate roads with higher values of critical indices.