At least one because the route editor will complain otherwise.
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Good afternoon, my nobleman. So, it's me once again. If the high-speed route in TWS has a speed of 320 km/h, for example, after filling in the station data, if I were to set the initial speed limits to reach 320, where do I start? I am creating a Brazilian high-speed route between the capital Brasília and Belo Horizonte. Could you give me some tips so that the Trac editor doesn't complain?