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On highway and arterial roads the Driver Attention Monitor continually monitors and assesses driver behavior behind the wheel to help determine if the driver is becoming inattentive – and then if so, warn the driver to take a break. The system uses input from the Electric Power Steering (EPS) to measure both the frequency and severity of the driver’s steering inputs to gauge their level of awareness with four gradients.
When the Driver Attention Monitor is activated, the driver is first alerted by a coffee cup icon and a 4-level bar graph that is displayed on the MID below the speedometer and tachometer. The bar graph indicates full attention with 4 white bar elements are illuminated. As the driver attention drops, fewer and fewer bars are illuminated. When the number of bars drops to two, a message inviting the driver to take a break is illuminated. If the driver continues driving and the graph drops to the lowest level of one bar, a beeper sounds and the steering wheel vibrates, prompting the driver to pay closer attention or take a rest break.