Lighting fixture data hubs and systems and methods for use. An exemplary data hub comprises an annunciator configured to generate indications; a sensor configured to detect a zone comprising a plurality of parking spaces and to determine whether or not one or more vehicles and/or one or more pedestrians are present, the sensor further configured to emit one or more signals corresponding to said detection; a processor in communication with the annunciator and the sensor, the processor configured to receive the one or more signals from the sensor and operable to direct the annunciator to generate an indication in response to the signal; and a sensor unit housing having at least portions of the annunciator, the sensor, and the processor located therein, the sensor unit configured to attach to a device such that power supplied to the device is also used to supply power to the data hub.
