Feel your route: a tactile display for car navigation (original) (raw)
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Proceedings of the 2nd International Conference on …, 2010
Tactile displays are an actively studied means to convey large amount of spatial information in the car. Their advantage compared to conventional car navigation systems is their ability to free the driver's visual and auditory senses. Previously the tactile displays were integrated into the seat of a car to present multiple direction information to the driver. However, in the commercial cars the seat is used to provide the vibro-tactile warning signals, so driver might not differentiate between navigation and warning information. Furthermore, the amount of information presented with tactile displays can cause significant cognitive workload, performance degradation and distraction to the driver. In this paper, we explore different methods of encoding multiple directions information with a tactile belt in the car. We compare the vibro-tactile presentation of spatial turn-by-turn information with a conventional car navigation system to measure cognitive workload, performance and distraction of the driver. We found that drivers showed better orientation performance on the tactile display than with the conventional car navigation system. At the same time there was no difference in cognitive workload, performance, and distraction. Thus, a tactile interface can be useful to present more information than simple left or right directions in high load driving conditions in which drivers are required to observe the traffic situation with their visual and auditory senses.
Right or Left: Tactile Display for Route Guidance of Drivers
A tactile interface is an alternative channel of communication, which can be utilized to display navigational instructions in cars under high visual and auditory load conditions. We investigated the use of a tactile belt for turn-by-turn information presentation in cars, which was originally designed for the route guidance of blind and pedestrian users. Important information artifacts in turn-by-turn route guidance are the distance to an upcoming crossing and the direction to follow. The tactile belt was examined in a pilot study for presenting direction information in a car navigation system. The pilot study was used to explore first ideas of tactile encodings for direction presentation with the tactile belt. The study presented in this article compares these designs systematically for their use in tactile route guidance in the car. For this purpose we conducted an experiment with 10 participants on real urban roads to evaluate three different vibrotactile patterns. The results show that the "two vibrators front design" was significantly different than the "two vibrators side design". The two vibrator front encoding was preferred significantly. The performance of the participants on two vibrators front design was significantly different than the two vibrators side design. The Friedman test showed a significant difference in the usability of all three vibrotactile patterns. A significant difference was found in the ease of use of two vibrators front encoding compared to other encodings. On the basis of quantitative and qualitative results, we conclude that the two vibrators front encoding is comparatively is the better design for presenting the direction information. Our findings will be helpful for the car industry in designing the tactile based car navigation systems. Zusammenfassung Taktile Nutzungsschnittstellen können als alternativer Sinneskanal genutzt werden, um Navigationsinformationen in Fahrzeugen bei Situationen mit hoher visueller und akustischer Last zu vermitteln. Wir haben untersucht, in wie weit Turn-by-Turn Informationen über einen taktilen Gürtel präsentiert werden können, der ursprünglich zur Navigationsunterstützung für Fußgänger und blinde Personen entwickelt wurde. Wichtige darzustellende Informationen bei der Turn-by-Turn Navigation sind die Entfernung zu einem Kreuzungspunkt und die zu verfolgende Richtung. In einer Pilotstudie wurden bereits erste Ideen für Designs der taktilen Richtungsanzeige exploriert. Die in diesem Artikel präsentierte Studie vergleicht die erfolgreichen Designs systematisch. Hierzu wurde eine Evaluation mit zehn Teilnehmern in einer realen städtischen Umgebung durchgeführt. Die Ergebnisse zeigen, dass die zwei der untersuchten Designs mit den taktilen Stimuli vorne am Körper ("two vibrators front") signifikant besser abgeschnitten haben als mit den taktilen Stimuli an der Seite ("two vibrators side"). Sowohl die Präferenz als auch die Performance zeigten signifikante Unterschiede. Der Friedman Test zeigte desweiteren signifikante Unterschiede bezüglich der Usability zwischen allen drei getesteten Designs. Auf Basis der quantitativen und qualitativen Ergebnisse können wir schließen, dass die Kodierung von Richtungen mit Vibrationsmotoren vorne am Körper im Vergleich besser für die Richtungsanzeige geeignet ist. Diese Ergebnisse sind für die Autoindustrie wertvoll, die taktile Navigationssysteme entwickeln.
2015
Tactile displays are an actively studied means to convey large amount of spatial information in the car. Their advantage compared to con-ventional car navigation systems is their ability to free the driver’s visual and auditory senses. Previously the tactile displays were integrated into the seat of a car to present multiple direction in-formation to the driver. However, in the commercial cars the seat is used to provide the vibro-tactile warning signals, so driver might not differentiate between navigation and warning information. Fur-thermore, the amount of information presented with tactile displays can cause significant cognitive workload, performance degradation and distraction to the driver. In this paper, we explore different methods of encoding multiple directions information with a tac-tile belt in the car. We compare the vibro-tactile presentation of spatial turn-by-turn information with a conventional car navigation system to measure cognitive workload, performance and di...
Applying Tactile Displays to Automotive User Interfaces
2008
Drivers' attention is occupied by an ever increasing number of in-vehicle information systems. The tactile channel offers a viable alternative for conveying information to the user while simultaneously relieving the other senses. In this paper, we propose how our previous work in the field of tactile displays can be transferred to an automotive context. We envision displaying spatial information in order to assist drivers, allowing them to focus their visual attention on the road ahead.
Enhancing Navigation Information with Tactile Output Embedded into the Steering Wheel.
Navigation systems are in common use by drivers and typically present information using either audio or visual representations. However, there are many pressures on the driver's cognitive systems in a car and navigational systems can add to this complexity. In this paper, we present two studies which investigated how vibro-tactile representations of navigational information, might be presented to the driver via the steering wheel to ameliorate this problem. Our results show that adding tactile information to existing audio, or particularly visual representations, can improve both driving performance and experience.
Proceedings of the 6th Nordic Conference on …, 2010
Visual and auditory displays successfully complement each other presenting information in car navigation systems. However, they distract the visual and auditory attention of the driver, which is needed in many primary driving tasks, such as maneuvering the car or observing the traffic. Tactile interfaces can form an alternative way to display spatial information. The way of how exactly information should be presented in a vibro-tactile way is explored rarely. In this paper we investigate three different designs of vibro-tactile stimulation to convey distance information to the driver using a tactile waist belt. We explore the tactile parameters intensity, rhythm, duration, and body location for encoding the distance information. We conduct a comparative experiment on a real navigation scenario in an urban environment to evaluate our designs.
Haptic Navigation Cues on the Steering Wheel
Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems, 2019
Haptic feedback is used in cars to reduce visual inattention. While tactile feedback like vibration can be influenced by the car's movement, thermal and cutaneous push feedback should be independent of such interference. This paper presents two driving simulator studies investigating novel tactile feedback on the steering wheel for navigation. First, devices on one side of the steering wheel were warmed, indicating the turning direction, while those on the other side were cooled. This thermal feedback was compared to audio. The thermal navigation lead to 94.2% correct recognitions of warnings 200m before the turn and to 91.7% correct turns. Speech had perfect recognition for both. In the second experiment, only the destination side was indicated thermally, and this design was compared to cutaneous push feedback. The simplified thermal feedback design did not increase recognition, but cutaneous push feedback had high recognition rates (100% for 200 m warnings, 98% for turns).
Follow the vibes: A comparison between two tactile displays in a navigation task in the field
PsychNology J., 2016
Navigational systems guide users providing visual and acoustic indications, burdening user’s attention. On the one hand, following visual guidance is challenging because of the constant need to switch the gaze between the display and the surroundings. On the other hand, auditory indications can be obtrusive and inefficient. Tactile displays, i.e., systems that send stimuli via the tactile channel, can overcome such limitations. They are useful when the visual and auditory attention is limited and they can deliver precise spatial information in an unobtrusive manner all around the user. Navigational systems deploying tactile guidance have been experimented with different devices (e.g., hand-held devices, belts, armband and wristband). Here we compared a tactile vest and a tactile glove in guiding users through an itinerary in an urban setting. Twenty-four people (9 males) participated in the study (mean age 24.37, SD= 2.24). Our findings show that the both devices are efficient as na...