In-Vehicle Information System Used in Complex and Low Traffic Situations: Impact on Driving Performance and Attitude (original) (raw)
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How accurate must an in-car information system be?
Proceeding of the twenty-sixth annual CHI conference on Human factors in computing systems - CHI '08, 2008
Driving requires focused attention and timely decision making for appropriate maneuvers. This relies on welltimed and accurate information. Designing an in-vehicle information system it is important to ensure that the information for the driver does not negatively affect cognitive processing and driving performance. This study investigates levels of information accuracy necessary in invehicle information systems to elicit positive behavioral and attitudinal responses from the driver. In a 2 (gender) by 5 (accuracy: 100%, 88%, 76%, 64% and no system) between-participants study, 100 participants drove in a driving simulator for 25 minutes with an in-vehicle information system designed to inform the driver of hazard and traffic events. Results show that decreasing the accuracy of the system decreased both driving performance and trust and liking of car and in-vehicle system. Female drivers in particular benefit from the in-vehicle system and show higher tolerance of inaccuracies. Design implications for in-vehicle systems are discussed.
2008
Abstract Driving requires focused attention and timely decision making for appropriate maneuvers. This relies on well-timed and accurate information. Designing an in-vehicle information system it is important to ensure that the information for the driver does not negatively affect cognitive processing and driving performance. This study investigates levels of information accuracy necessary in in-vehicle information systems to elicit positive behavioral and attitudinal responses from the driver.
Transportation Research Part F-traffic Psychology and Behaviour, 2005
The main objective of this study was to compare a standardized visual performance test in three driving research environments: laboratory, simulator and instrumented vehicle. The effects of the standardized secondary visual search task on the primary task, i.e., aspects of driving performance, were evaluated and compared between the three facilities. One main purpose of the EU project HASTE, which was the context of the present study, is to produce guidelines for and assess the suitability of each of the test environments for testing the effects of in-vehicle information systems on driving performance. Results showed that for gross effects on performance indicators, aspects of lateral position control in the laboratory test gave a sufficient first indication of sizeable influence as soon as visual attention was diverted towards the secondary task. More subtle differences between levels of visual search difficulty were only found in the simulator and in the field.
Behavior and safety when driving with in-vehicle devices that provide real-time traffic information
Five in-vehicle systems providing real-time traffic information were compared to an accepted standard (listening to radio congestion information while driving). The safety of the devices was evaluated during the execution of a number of driving manoeuvres in actual traffic, as well as in a car-following and braking task on a closed track. Driving performance was rated in terms of expert safety judgments, as well as in terms of responses and reaction times to relevant queries asked while driving. Results showed that driving with these systems is not necessarily less safe than driving in the accepted standard condition. This applied to the Philips Carin 520 and the Volvo/Mitsubishi RTI systems. Two other systems, the Traffic Master YQ and the Renault/Sagem Carminat, showed evidence of being less safe than the standard. These results were related to fairly elementary ergonomic features, i.e., display and handling characteristics.
Transportation Research Part F-traffic Psychology and Behaviour, 2005
The relationship between distraction and driving performance: towards a test regime for in-vehicle information systems Commonly special issues are prepared on a specific topic, either on the basis of invited papers to cover a certain research area, or they are based on selected papers from a conference. However, occasionally the common accomplished mission and coherence of a multi-partner project warrant a special issue as well. The now completed European project HASTE (Human machine interface And the Safety of Traffic in Europe) aimed to develop methodologies and guidelines for the assessment of In-Vehicle Information Systems (IVIS). To date, there have been several attempts to provide manufacturers and testing authorities with a set of guidelines to assess the likely impacts of IVIS on the driving task, usually in the form of a checklist. Such checklists provide a tool that enables the identification of likely problems but they do not enable the quantification of safety problems. This project is fundamental to the development of a valid, reliable and efficient tool that will aid testing authorities in their safety evaluation of IVIS. The raison dÕêtre of the effort is quite straightforward. Lately, a large number of technological developments have enabled the rapid increase of applications that can be applied for delivering in the vehicle traffic information and other forms of driver support. In the past the main targeted group was professional drivers but more recently there has been an explosion in systems catering to drivers of private cars. Advanced traffic information and support systems and services potentially contribute to a safe, efficient and environmentally friendly traffic flow. Accurate and timely traffic information can decrease travel times and costs, and also momentary workload as the driver does not have to divert his/her attention to other sources of travel information. However, a potential negative side effect from certain aspects of these new methods of traffic information provision arises from the growing amount of information addressed at road-users. Every new information source could add to the information load of drivers, potentially counteracting the potential benefits of decreased workload from the same information. In order to control negative traffic safety effects, it is necessary to adapt traffic information presentation to current traffic situations and road-user requirements. Only if traffic information is easily accessible, carefully timed, understandable and matched to user needs, will information overload on drivers be
Travelers' preferences for in-vehicle information systems: An exploratory analysis
Transportation Research Part C: Emerging Technologies, 1995
A sample of travelers' preferences toward in-vehicle traffic information systems was undertaken and appropriate statistical models were estimated. Specifically, ordered logit and regression analyses were conducted to quantify travelers' ratings of the importance of in-vehicle system attributes, and the distance ahead that they prefer to be notified of various types of information provided by in-vehicle systems. Model estimation results show that travelers' socioeconomics, habitual travel patterns, commute congestion levels and attitudes toward in-vehicle technologies are significant determinants of travelers' importance ratings and the preferred distance ahead of in-vehicle system information. These model results provide important information for both marketing and design of in-vehicle information systems.