This participle describes someone actively engaged in travel, journeying along a road. In Luke 10:33, it introduces the Samaritan in Jesus' parable: 'But a Samaritan, as he traveled, came to where the man was.' The word emphasizes movement and journey—the Samaritan wasn't merely passing by abstractly but was actively traveling, yet stopped to help. Classical Greek uses this for those traversing territories, and the New Testament preserves that sense of purposeful movement along a route.