Consider the poem “Midnight on the Great Western” by Thomas Hardy. The first two stanzas set the scene and introduce the subject of the poem. The final two stanzas address the boy directly, both asking rhetorical questions of him and taking on a more didactic tone. Your poem can take a similar turn if you feel that is appropriate.
In Hardy’s poem, the boy traveling is not the speaker of the poem. You can choose to write a poem about your own travels or a narrative poem about a character you invent.