In TrackCam Map View  for Spireon/Geotab there are different color bubbles that contain minute indicators for each vehicle.

The color indicate how long the vehicle has been reported to be in various conditions by the camera system.

Green bubble means the vehicle ignition is on, the vehicle is moving and the camera system is online for video information.

Yellow bubble means the vehicle ignition is on, the vehicle is idling and the camera system is online for video information.

Blue bubble means the GPS device is online but the camera is offline and unavailable for video information (usually because of momentary cellular coverage issue).

Gray bubble means the vehicle is off no GPS or video information is available.