The intersection is a complex environment with an interface that uses colors and symbols to communicate either to go or stop; the confusion of these commands could be life threatening. The interface of the intersection would improve if it had a voice aspect.
There are two main users of the intersection and interface, drivers and walker. It is vital that both understand the interface and the commands it gives. Humans are very easily distracted and this could be dangerous if the interface is completely dependent on visual cues.
The improved interface would consist of an additional app that is built into new cars and available for smartphones. This app would be linked to the traffic light interface in real time. This would allow the app to verbally tell the driver lots of information regarding the intersection. It would inform the driver of the command of the traffic lights: “go” or “prepare to stop.”
We observed many of the people walking had headphones in while crossing the intersection. This could be very dangerous because the hearing the different sounds of the intersection are important to safety. For example, we heard the sounds of the car engine idling, the brakes, and the engine revving. With headphones in all this information is lost. So, the new interface app would interrupt the music and say either “Safe.” or “Not safe to cross.”
The voice itself would match the emotion and mood of the traffic lights having a very calm and steady tone being both neutral and an indication of caution low in intensity. The voice would be a feminine synthetic voice much like Siri. The interface would have these traits so that it is perceived as friendly, intellectual, and non-bothersome.