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Intelligent Transport Systems, IET

Issue 1 • Date March 2008

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Displaying Results 1 - 7 of 7
  • Developing human-machine interaction components for a driver assistance system for safe speed and safe distance

    Page(s): 1 - 14
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1555 KB)  

    Pre-screening involving a number of candidate human-machine interaction solutions in three different modes (visual, auditory and haptic) for the concept of 'safe speed and safe distance' (SASPENCE) in an advanced driver assistance system is described. This was performed simultaneously in two European countries, Sweden and Spain, in 2004. Two groups of about 30 drivers each participated in the two-phase procedure in each country. Eleven visual display alternatives for speed information, ten alternatives for distance warning and 12 auditory warning signals were screened by standard procedure. In addition, two alternatives of haptic feedback via the accelerator pedal were tested in a mock-up driving seat. The overall results provide recommendations for visual, auditory and haptic feedback alternatives to build a driver support system for safe speed and safe distance. View full abstract»

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  • Integrated vehicle's lateral safety: the LATERAL SAFE experience

    Page(s): 15 - 26
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (523 KB)  

    The applications developed and the evaluation results of the EU funded automotive safety PReVENT IP subproject LATERAL SAFE are described. The data synthesis algorithms that aim at achieving a reliable representation of the objects and their kinematics, in the lateral and rear fields of the host vehicle are first presented. The fusion architecture implemented is a distributed sensor-level fusion system that processes centrally the tracks of four independent tracking systems: a rear-looking long-range radar, two lateral short-range radar networks and a lateral-rear synthesised image processing unit. Then the functionalities of the three applications of the project are briefly described including lane change aid, lateral collision warning and lateral and rear area monitoring. The paper ends with a short overview of the technical evaluation results and the conclusions drawn after the end of the project. View full abstract»

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  • Techno-economical inspection of high-speed internet connection for trains

    Page(s): 27 - 37
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (519 KB)  

    Some attractive service scenarios for railways' intelligent transport systems (RITS) in three different user segments, that is, passengers, freight companies and train operator's in-house customers, are presented. The case study covers the analysis of customer needs and techno-economic evaluations. The analysis indicates that Flash-OFDM technology provides promising pre-stage solution for the train connections in Finland. Also, the WiMAX-based high-speed Internet access for passengers may be profitable in the most heavily operated railway leg in Finland. The sensitivity analysis shows that the most crucial parameters for the case are 'user share', 'average revenue per User' and 'WiMAX cell size'. The analysis highlights the large economical potential for RITS services. It is possible, and also recommendable, to implement all the services for different user groups with the same hardware equipment. By this way, investment costs can be reduced noticeably. The in-house customers provide the most attractive service segment in the sense of net present value and reliability, by reducing operating costs and carriage investments while improving the management of operations in general. View full abstract»

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  • Using immersive video to evaluate future traveller information systems

    Page(s): 38 - 46
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (370 KB)  

    An immersive video system that has been developed for the purpose of evaluating future traveller information system (F-TIS), in particular, F-TIS scenarios that rely on a pervasive computing infrastructure is presented. Immersive video uses multiple video streams captured from a first person perspective at key locations in a scenario. By dynamically reconstructing a user's visual and aural experiences, the immersive video system creates a lab-based framework that captures a number of contextual factors of real-world mobile information system use. Graphical user interfaces, displayed on a wearable display and a personal digital assistant, are used in the evaluation. Both the technical basis of the immersive video system and its application to the study of user perceptions and reactions to pervasive information services are presented. View full abstract»

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  • Mobile mapping for the automated analysis of road signage and delineation

    Page(s): 61 - 73
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (668 KB)  

    A portable mobile stereo vision system designed for the assessment of road signage and delineation (lines and road studs or 'cat eyes') in low light conditions is presented. This novel system allows both geometric and photometric measurements to be made on objects in a scene. Using the system, it has been shown that retro-reflectors, and in particular road signs, can be identified by nature of their reflective properties. In addition, a novel imaging application has been investigated that facilitates the detection of defective road studs. Any objects examined can also be positioned on a national grid through the fusion of stereo vision with global positioning system technology. Automated feature extraction and analysis routines make the system fully autonomous. View full abstract»

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Aims & Scope

IET Intelligent Transport Systems is an interdisciplinary journal devoted to research into the practical applications of intelligent transport systems and infrastructures.

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