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Effects of User Distraction Due to Secondary Calling and Texting Tasks

We conducted a study of user distraction using a simple driving game controlled by a steering wheel. Steering performance was compared in three conditions, two using distracter tasks and one without distractions. One distracter simulated answering calls on a mobile phone. The second simulated sending short text messages using a phone keypad. Both distracters were performed during the primary steering task, necessitating division of attention between two unrelated tasks. Results indicate that the text messaging distracter significantly degraded steering performance. On average, distance from the center of the “driving lane” increased by about 33%, compared to the no distracter condition. The call answering distracter resulted in about a 6% increase. Deviation during text messaging improved upon completion of a message.