.. py:module:: signal_boxes
.. py:module:: pyrcs.other_assets :noindex:
A class for collecting signal box prefix codes.
.. autosummary:: SignalBoxes.collect_signal_box_prefix_codes SignalBoxes.fetch_signal_box_prefix_codes SignalBoxes.collect_non_national_rail_codes SignalBoxes.fetch_non_national_rail_codes
.. autoclass:: pyrcs.other_assets.SignalBoxes .. automethod:: collect_signal_box_prefix_codes .. automethod:: fetch_signal_box_prefix_codes .. automethod:: collect_non_national_rail_codes .. automethod:: fetch_non_national_rail_codes