An operator impairment detection system comprising a wearable mobile device including a frame for supporting the wearable mobile device on an operator's face, an accelerometer for sensing acceleration of the wearable mobile device, a proximity sensor configured to be aimed at an eye area of the operator when the operator is wearing the wearable mobile device for sensing the operator's eye closing and opening, and a processor configured to receive acceleration vector data and proximity vector data and run an application for determining when the operator's head nods or rotates and when the operator's eye blinks and for determining when the nod, rotation, and/or blink or combination of nods, rotations, and/or blinks constitutes an operator impairment event, the processor being configured to instruct the wearable mobile device to alert the operator when an impairment event is detected.