• The quality of the announcements by microphone differs very much, depending on the speaking employee. The speakers may change with different shifts.
  • Announcements in different languages are often very difficult to understand by the recipients, because the speakers do not have the desired skills of pronouncing the announcements in a foreign language correctly.
  • In our example with 100 busses and 50 destinations in 3 languages there are 15.000 possible combinations.
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