A device and system is provided for alerting or signaling a vehicle driver after the driver leaves a vehicle compartment. A signaling device, in a deployed condition, is physically located in a forward line-of-sight of a driver operator of the vehicle. The signaling device is deployed automatically in the event of the opening of a vehicle door from the inside of a vehicle compartment. Resetting of the signaling device, out of the line-of-sight, requires manual operation by the vehicle operator outside the vehicle compartment. The system ensures that the operator will be alerted to safety procedures required after activities outside vehicle.