Public transportation in Davos is incredibly safe, reliable, and punctual. It's a primary method of transport for both locals and tourists. The Swiss train and bus systems are known for their cleanliness and efficiency, with routes that cover the entire town and surrounding areas. Plus, crimes like theft or harassment are exceptionally rare in this part of Switzerland. Even at night, travelling alone is generally safe and comfortable. Do remember to have a ticket before boarding, as fines for fare evasion can be heavy, even if it was an honest mistake.