My group designed a feature in the GPS System of a car which displays the speed limit on the GPS screen and on the left side of the windshield. This can be activated through voice command by saying, “Computer, what is the speed limit”. It’s main purpose is to inform the driver of the speed limit when a sign is not available.

We thought of the idea after discussing the various uses of navigation system. Using sticky notes, the group brainstormed several needs one might have in relation to smart vehicle interfaces, one which was information about the speed limit. We also brainstormed its users: people who drive cars. Second, we came up with a scenario. Our scenario involved a person driving down a deserted road with no signs of the speed limit. There is a police officer parked near the side of the road, and they do not know whether you should slow down or speed up. At first, the driver was suppose to select an option on the GPS screen which would display the speed limit. However, a teammate suggested that since the driver is focusing on the road, it would be safer to make it hands free. Another teammate suggested that in order for the driver to never take its eyes off the road, the windshield should have a built in screen which displays the speed limit. This screen would be on the left side of the windshield without obstructing the view of the road. For a more interactive design, the computer will audibly respond back after the user asks for the speed limit. Our scenario concludes with driver adjusting their speed according to the speed limit, thus avoiding a traffic ticket.

The interaction flow:

Interaction Flow

User interface screens:

User interface screens

Some questions arose during the UCD Charrette like: Will this product be used frequently or will it become vestigial? Also, how can we increase the friendliness of this product? This feature is meant to be practical, thus we need to abstain from making it too complex.

What I liked about this project was the collaboration between my team. Through the brainstorming process, we watched our product evolve as better ideas were brought to the table. I enjoyed the different processes of the Charrette such as the use of sticky notes to brainstorm ideas and types of users, creating scenarios, and using only pen and paper to create the interaction flow and the user interface screens.

The UCD Charrette Process is applicable to designing products and user experiences. By designing products and user experiences, you are also designing the hardware and the graphics. For example, if one wanted to design a website, the interaction flow and the user interface screen would be critical for the organization of the website. This design process might not be appropriate in designing systems such as organizations and businesses.

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