The use of innovative technologies in the case of the space reduction in urban environment: study of a lane keeping system

摘要

The decrease of the space dedicated to the road traffic has become a major issue for the sustainable development in urban environment. This decrease aims, for example, to improve the capacity of the public transports or to increase the pedestrian spaces. A decrease of this road traffic space can be achieved either by reducing the lane number, or by keeping the same number of lane and reducing the width of the lanes. In the both cases, it may induce a decrease of capacity. The current works aim to evaluate the impacts of a Lane Keeping System in an urban environment relating to the traffic capacity. To evaluate the impacts of a such system in actual conditions is not always possible due to ethic and safety criteria. Thus, simulation tools, like driving simulators, become useful and necessary. To study the potential impacts of this driving aid device, we propose to follow the so-called integrated approach, which uses both a traffic simulation model and a driving simulator. The approach consists in several steps and can be iterative. The first step consists in identifying the drivers' behaviours in actual situations or with a driving simulator for the future situations. In the second step the results of the experiments are used to model drivers' behaviours. These new behaviours are then implemented in the behavioral traffic model during the third step. At this stage, modified traffic flow can be simulated and traffic studies can be conducted. An optional fourth step consists in studying the drivers' behaviour immersed in the new "modified" virtual traffic and to assess the compatibility between equipped and non-equipped drivers. These works were supported and took part in the European Research Project STARDUST (5th F. P.), which aims to assess the extent to which ADAS (Advanced Driver Assistance Systems) and AVG (Automated Vehicle Guidance) systems can contribute to a sustainable urban development.