Being a Tour Manager is a 24/7 job with lots of responsibilities.
It's worth noting that tour managers often double as personal managers. This means that they not only oversee the logistics of the tour but also manage all aspects of an artist's life. They are responsible for not only ensuring a smooth-running tour but also ensuring the artist's happiness and well-being.
In general, road managers handle tour details for their specific band, while tour managers are used to oversee the logistics, finances and communications for tours as a holistic entity.