Getting data by operator
For all data types you can apply the NOC query parameter. This will limit results to data published by that operator, including any other NOC associated with that operator on this service.
Download the data catalogue to see the relationship between operators and NOC on this service.
Getting data by location
To get data for a specific location you can use the boundingBox parameter. For bus location data this will limit the data to vehicles within the prescribed area at that point in time. For timetables are fares if any data is within the boundingBox, the whole data set will be returned.
For more information on API query parameters please go to the API reference.