This data flow is sent to the maintenance and construction field personnel and represents an auditory or electronic alert that a vehicle has intruded upon a work zone, is about to intrude upon a work zone. The alert can also be provided based upon a detection on board the maintenance and construction vehicle that another vehicle is approaching too quickly, or is too close for safety. The auditory alert may constitute a siren, or other type of alarm. The electronic alert could cause an alert on a device carried by the personnel.

Sub Data Flows

Parent Data Flows

Associated PSpecs

Parent Information Flows