By putting real people in ordinary cars and let them run around in Gothenburg while they talk to each other, Jessica Villing sorted out how the interaction between the driver and the car’s built-in dialog systems, such as navigation system, can be improved To reduce the cognitive workload on the driver and thus increasing traffic safety.
Similar experiments are usually carried out in simulators where drivers are given math problems to solve while they drive. But because it is not going to like that in reality sought Jessica Villing answers to how a real conversation with a passenger affects us when we are driving.
– We humans are good at reading the one we are talking to, and watching how passengers and drivers act is an exemplary role model for the future of dialogue systems, she says.
The project Dico (Latin for I speak) is a collaboration between the University of Gothenburg, Volvo, TeliaSonera and Veridict. Jessica Villing his research looked specifically at how Dico should be aware of and understand the cognitive load that a driver is exposed to during their journey. And if the load is due to the driving task or something else, such as interaction with the system itself.
– The theory I am presenting is to be able to conduct a dialogue with the car as if it were a fellow passenger who sees the same things as you, and therefore, take into account external factors when communicating. For example, keep quiet about the driver becomes evident stressed by heavy traffic, to notice when it’s appropriate to talk or if it’s location to await instructions.
The systems available today are not aware of how the traffic situation looks like, but the dialogue continues even if the driver is not ready for it. Navigation Instructions come with a certain range but perhaps should instead come when the driver needs the information, which can vary both depending on the traffic situation and the driver himself.
– You should not have to concentrate on something other than driving while driving, says Jessica Villing, which itself is usually mute the navigation system in his car because she thinks that it often interferes .
– The best would be the opposite, to be able to turn off the image and just listen to the sound, the interaction feels natural and the information comes when you are ready to listen. It is hoped that Jessica Villingsberg thesis should serve as a basis when it comes to improving the voice control in our cars and make them safer to use and more intuitive.
– First, so that drivers actually want to use the system and feel that they benefit from it, rather than being distracted by having to press buttons and watch a screen. And that a security conscious system such as this will lead to fewer accidents, says Jessica Villing.
The thesis
Towards Dialogue Strategies for Cognitive Workload Management 
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