On the road
Definition 1 of 3
Pro Tip 1/3Work-Related Travel
Used to describe frequent travel for work, often involving meetings or sales. 
As a sales representative, being on the road is a significant part of my job.
Pro Tip 2/3Musician's Lifestyle
Commonly used to refer to musicians touring or in transit for concerts. 
The band has been on the road for months promoting their new album.
Pro Tip 3/3Extended Trips
Implies a long period of travel, not just a short trip. 
The documentary team will be on the road for the rest of the year.