| argument_table | Argument Table |
| constructUrl | Format a URL for TfL API |
| httrStatusCheck | Check HTTR Response against common HTTP Codes |
| initTFL | Initialise TfL Connection |
| request_table | Request Table |
| tflAPI | Query an API with Timeout Handling |
| tflRequest | Request a JSON object from TfL |
| updateRoutes | Check if TfL Data is out of date |
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